The three day snap lockdown in south-east Queensland could be extended as the state braces for more Covid-19 cases and lists two prestigious schools as exposure sites. Eleven local government areas have begun their first day of lockdown with Brisbane, Ipswich, Logan City, Moreton Bay, Redlands, Sunshine Coast, Gold Coast, Noosa, Somerset, Lockyer Valley and Scenic Rim residents confined to their homes. The stay-at-home orders were announced after the state recorded six new cases of the highly-infectious Delta strain of the virus on Saturday - all linked to a 17-year-old schoolgirl. The lockdown is set to end on Tuesday though fears have been raised it could be extended with the Covid-19 cluster expected to grow after already spreading to two prestigious schools. Mater Hospital Director of Infectious Diseases Paul Griffin warned there was a 'fairly low' chance restrictions would be eased on time. The three day snap lockdown in south-east Queensland is likely to be extended as the latest outbreak spreads across the state and through several top schools Eleven local government areas have begun their first day of lockdown with Brisbane, Ipswich, Logan City, Moreton Bay, Redlands, Sunshine Coast, Gold Coast, Noosa, Somerset, Lockyer Valley and Scenic Rim residents confined to their homes The lockdown is set to end on Tuesday though fears have been raised it could be extended as the state braces for more Covid-19 cases with two prestigious schools recording positive cases (pictured, Brisbane Grammar School confirmed a pupil had tested positive to Covid-19) 'I would think, with the number of additional cases overnight, the additional schools, that the chance of this ending after three days is fairly low,' he told Courier Mail. 'But, of course, we need everyone to do the right thing so that we can get on top of it as quickly as possible and be out of lockdown as soon as it's appropriate.' Two high schools - including the prestigious Brisbane Grammar School - are the latest to be caught up in the Covid outbreak in Queensland as the state endures another hard lockdown. On Saturday night, parents from BGS, which charges almost $28,000 in fees each year for students in years 7-12, were notified a pupil had tested positive to the virus. Anyone at the school's Spring Hill campus on July 28, 29 and 30 was ordered into home isolation until further advice was provided by Queensland Health. The development comes as St Peters Lutheran College in Indooroopilly, in Brisbane's west, also sent out an email to parents confirming the school had been identified by Queensland Health as a possible exposure site. 'They (Queensland Health) have asked for all members of the St Peter's community to quarantine/isolate in place until further notice,' the email read. Among the venues added to the growing list of exposure sites are a Coles supermarket, numerous chemists and even a handful of bus routes. Oxley, in Brisbane's south-west, has three fresh exposure sites - an Aldi supermarket, (Sunday 25 July, 8.55am to 9.25am) Chemist Warehouse (Sunday 25 July, 9.10am to 9.30am) and a Country Markets (Sunday 25 July, 8.30am to 9.10am). Jindalee's Coles, (Thursday 29 July, 2.55pm to 3.15pm) also in the south-west, a McDonald's (Sunday 25 July, 6.20pm to 6.55pm) and a Terry White Chemmart (Thursday 29 July, 3pm to 3.20pm) in the same suburb were also exposed. The same applies for Highgrove Bathrooms in East Brisbane (Thursday 29 July, 11am to 11.25am) and the Southbank TAFE (Wednesday 28 July, 6pm to 9pm) in South Brisbane. Brisbane Grammar School has been identified as a possible Covid exposure site - parents were informed via email on Saturday St Peters Lutheran College in Indooroopilly was also identified as a possible Covid exposure site in Queensland Latest Covid exposure sites in Queensland Anyone who attended the following venues at the times listed is a close contact and must get tested and then isolate for 14 days, regardless of the result. Blunder Road Country Markets, 3/150 Blunder Rd Oxley, Sunday 25 July 8.30am to 9.10am ALDI Oxley, 146 Blunder Rd Oxley, Sunday 25 July, 8.55am to 9.25am Chemist Warehouse, 146 Blunder Rd Oxley Sunday 25 July 9.10am to 9.30am McDonalds, Jindalee Homemaker City, 12A Goggs Rd Jindalee 6.20pm to 6.55pm Bus Route 66, UQ Lakes Bus Station to PA Hospital Bus Station Wednesday July 28, 12.20pm to 12.40pm Bus Route 29, PA Hospital Bus Station to UQ Lakes Bus Station, Wednesday July 28, 2.30pm to 2.50pm Southbank TAFE, F Block Level 5 Rm 501566, Ernest St South Brisbane, Wednesday July 28, 7pm to 9pm Highgrove Bathrooms, 899 Stanley St East East Brisbane, Thursday July 29 11am to 11.25am Coles Jindalee, Corner Goggs and Sinnamon Rds Jindalee, Thursday July 29 2.55pm to 3.15pm Terry White Chemmart Jindalee, 4/168 Sinnamon Rd Jindalee, Thursday July 29, 3pm to 3.20pm Bus Route 412, Sir Fred Schonell Dve, St Lucia to UQ Chancellor's Place, University of Queensland, Friday July 30, 9.45am to 9.55am Indooroopilly State High School, 111 Ward St Indooroopilly, Thursday July 29, 8am to 3.30pm Myer (level 2), Indooroopilly Shopping Centre, Thursday 29 July, 8.50am to 9.30am Seed Heritage (level 2), Indooroopilly Shopping Centre, Thursday 29 July, 9.20am to 9.35am Target (level 2) Indooroopilly Shopping Centre Thursday 29 July, 9.25am to 9.50am H and M (level 2) Indooroopilly Shopping Centre Thursday 29 July, 9.45am to 10.10am Kmart (Level 1) Indooroopilly Shopping Centre, Thursday 29 July, 10.10am to 10.45am Stacks Discounts Store, Indooroopilly Shopping Centre Thursday 29 July, 10.35am to 10.50am Country Road, Indooroopilly Shopping Centre Thursday 29 July, 10.45am to 11am Andonis Café & Bar, 4/281 Station Rd Yeerongpilly, Thursday 29 July, 11.50am to 1.45pm Bus Route 412, UQ Chancellor's Place to Stop 19 Sir Fred Schonell Dve, St Lucia Friday 30 July, 12.25pm departure Anyone who attended the following venues at the times listed is considered a casual contact who must get tested immediately and isolate until a negative result is received Bunnings Warehouse, Wecker Rd Mount Gravatt, Wednesday 28 July 7am to 7.35am Bunnings Warehouse, Wecker Rd, Mount Gravatt Thursday 29 July 12.30pm to 1.05pm Translational Research Institute, Ground Floor, Princess Alexandra Hospital, 37 Kent St Woolloongabba Wednesday 28 July 12.50pm to 2.45pm Female Toilets Level 2 near Forever New and Myer, Indooroopilly Shopping Centre Thursday 29 July, 8.45am to 8.50am Female toilets near Rebel Store and JB Hifi Level 1, Indooroopilly shopping centre Indooroopilly 10.50am 10.55am Source: Queensland Health Advertisement Anyone who caught the route 66 bus from the UQ lakes bus station to the PA Hospital bus station on Wednesday July 28, between 12.20pm and 12.40pm has also been added to the list. So too has the route 29 bus from the PA Hospital bus station to UQ lakes bus station on the same day, from 2.30pm to 2.50pm. Another bus route on the exposure site list is the 412 from Sir Fred Schonell Drive in St Lucia, southwest of the CBD, to UQ Chancellor's Place at the University of Queensland for Friday July 30, between 9.45am and 9.55am. The Indooroopilly Shopping Centre has become a site of interest for authorities, namely Myer, H and M, Target, Kmart and Seed Heritage for Thursday 29 July, between 8.30am and 11am. Additionally, two new casual contact exposure sites have been added for Mount Gravatt, in Brisbane's south. Coles Jindalee, in Brisbane's south-west, has been named as a Covid exposure site by Queensland Health Both are for Bunnings Warehouse, with one on Wednesday July 28 between 7am and 7.35am and the other on Thursday July 29 between 12.30pm and 1.05pm. Late on Saturday evening, even more casual exposure sites were confirmed, including two women's public toilets at the Indooroopilly Shopping Centre. Any person who has visited any of the identified sites is urged to get tested for Covid immediately. They must also remain in quarantine – even after receiving a negative result – for 14 days from when they were last at the venue. The lockdown has impacted more than three million residents, with NRL, AFL and Super Netball games all cancelled on Saturday across the state. Aldi in Oxley, (pictured) also in Brisbane's south-west, is a confirmed Covid exposure site - after six positive cases overnight, many parts of Queensland were plunged into a three-day lockdown The Terry White Chemmart in Jindalee (pictured) has been identified as a Covid exposure site in Queensland The 11 LGAs affected include Brisbane, Moreton Bay, Gold Coast, Ipswich, Lockyer Valley, Logan, Noosa Shire, Redland City, the Scenic Rim Regional Council, the Somerset Regional Council and the Sunshine Coast Regional Council. Residents living can only leave home for four reasons including for essential goods, to provide or receive care, for essential school and work, and exercise. Queensland Deputy Premier Steven Miles said the state had no choice but to impose the harsh restrictions. 'We have seen from the experience in other states that the only way to beat the Delta strain is to move quickly, to be fast, and to be strong,' he said. 'This will be the strictest lockdown that we have had.' QUEENSLAND'S THREE-DAY LOCKDOWN More than 3 million residents across 11 LGAs will be in a strict lockdown from 4pm on Saturday to 4pm on Tuesday The LGas affected include the City of Brisbane, the Moreton Bay Regional Council, the City of Gold Coast, the City of Ipswich, the Lockyer Valley Regional Council, the Logan City, the Noosa Shire Council, Redland City, the Scenic Rim Regional Council, the Somerset Regional Council and the Sunshine Coast Regional Council Residents can leave their home for four reasons - exercise, to give or provide care, essential shopping and for essential work or school Residents can exercise with one other person within 10km of their homes Masks are mandatory at indoor venues and residents must not travel further than 10km from their homes Funerals and weddings will be reduced to ten people and hospitality venues will be limited to takeaway only. Non-essential businesses such as cinemas, hairdressers, gyms and places of worship will all close. The restrictions apply to anybody who had been in any of the 11 LGAs from 1am on Saturday regardless or not if they've since left the area. Masks will be required for both students and staff at high schools. Visitors will not be allowed at resident's homes. Community and professional sport will not be permitted. Advertisement All rights reserved for this news site (dailymail) and under his responsibility