Fears an Australian may have been seriously injured in Sri Lanka bombings

One Australian may have been injured in the bomb blasts that ripped through three churches, three luxury hotels and a guesthouse in Sri Lanka on Easter Sunday.

Senior cabinet minister Simon Birmingham says no Australians are among the more than 200 people killed, but one person could be wounded.

'We are not aware of any Australian loss of life. I understand there may be an Australian injured but I'm awaiting further details on that,' he told ABC Radio National on Monday.

The Australian High Commission in Sri Lanka has been working to determine the whereabouts of Australians and monitor the situation.

Senior cabinet minister Simon Birmingham said one Australian is believed to have been seriously injured in the Sri Lanka bombing on Sunday (pictured is St Sebastian's church in Negombo, which was bombed on Sunday)

Senior cabinet minister Simon Birmingham said one Australian is believed to have been seriously injured in the Sri Lanka bombing on Sunday (pictured is St Sebastian's church in Negombo, which was bombed on Sunday)

Blood stains are seen on the wall and on a Jesus Christ statue at the St. Sebastian's Church after blast in Negombo, north of Colombo, Sri Lanka,after the bombing

Blood stains are seen on the wall and on a Jesus Christ statue at the St. Sebastian's Church after blast in Negombo, north of Colombo, Sri Lanka,after the bombing

A crime scene official inspects the site of a bomb blast inside a church in Negombo, Sri Lanka, which lost half its roof tiles with the force of the blast

A crime scene official inspects the site of a bomb blast inside a church in Negombo, Sri Lanka, which lost half its roof tiles with the force of the blast

Senator Birmingham said there was no indication about who was responsible for the atrocity, with no group yet to claim responsibility.

'The government is not seeking to move ahead of investigations that rightly will be led by the Sri Lankan authorities,' the trade minister said.

Up to 35 foreigners are believed to be among the dead after blasts at churches and hotels on Easter Sunday.

Senator Birmingham said Australia's thoughts were with those killed.

'These are terrible, distressing and tragic circumstances,' he said.

'Our heartfelt sympathies go out to the beautiful people of Sri Lanka for this terrible, terrible incident.'

Prime Minister Scott Morrison on Sunday said the government would be following through on the safety of Australians in Sri Lanka.

'The devastating nature of this horrific attack on innocent lives, simply going about their day, going to worship on the holiest of days of the Christian calendar, is just absolutely devastating,' Mr Morrison told reporters at Kirribilli House.

Labor leader Bill Shorten described the attacks as devastating.

'We think also of Australia's beloved Sri Lankan community who will carry an immense sense of shock and sadness today,' he tweeted on Sunday.

Timeline: how the Sri Lanka attacks unfolded

10.10am local time (05.40 BST): Reports from witnesses suggest that two churches in Sri Lanka have been hit by explosions as worshippers gather on Easter Sunday. The historic St Anthony's Shrine in Colombo and St Sebastian's Church in Negombo are among those reported to have been hit. 

10.50am: An unnamed security official suggests there have been six closely-timed attacks at three churches and three hotels and that suicide bombers may have been involved in at least two of the blasts.

12.20pm: It is reported 129 people are dead and more than 500 have been taken to hospital after blasts at six sites, according to a Sri Lanka state-run newspaper.

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