Novichok victim Dawn Sturgess is captured on CCTV

This is the moment Novichok victim Dawn Sturgess was captured on CCTV buying alcohol just over 24 hours before she was found frothing at the mouth and taken into intensive care.

The footage, obtained exclusively by MailOnline, shows the blonde and gaunt addict smiling and laughing at an off licence at the bottom of Rollestone Street in Salisbury, where her homeless hostel is located, unaware that by Saturday she would be fighting for her life.

Ozzy Hayatsu, the owner of the Best 1 Local off licence who sold her four cans of Karpackie beer for £6.99, said: 'She seemed happy. 

This is the moment Novichok victim Dawn Sturgess was captured on CCTV buying alcohol just over 24 hours

This is the moment Novichok victim Dawn Sturgess was captured on CCTV buying alcohol just over 24 hours

'She was celebrating after England got through their World Cup group and she was looking forward to celebrating with her friends.

'It is a terrifying thought to know that not even two days later she would be nearly dead.'

Ms Sturgess, 44, spent the following day shopping and drinking with friends in the centre of Salisbury before she collapsed at her boyfriend's home in Amesbury.  

It was initially believed that Ms Sturgess and her boyfriend Charles Rowley, 45, fell ill after possibly using drugs from a contaminated batch.

But after further tests, authorities declared a major incident.

On Wednesday night, counter-terror police assumed responsibility for the investigation after the Government's Porton Down laboratory concluded that the pair had been exposed to Novichok. 

The footage, obtained exclusively by MailOnline, shows the blonde and gaunt addict smiling and laughing at an off licence at the bottom of Rollestone Street in Salisbury

The footage, obtained exclusively by MailOnline, shows the blonde and gaunt addict smiling and laughing at an off licence at the bottom of Rollestone Street in Salisbury

Charlie Rowley and Dawn Sturgess (pictured) have been named as the couple who were exposed to an unknown substance in Amesbury

Charlie Rowley (pictured) and Dawn Sturgess have been named as the couple who were exposed to an unknown substance in Amesbury

Dawn Sturgess, 44, and Charles Rowley, 45, are fighting for their lives in hospital after being exposed to remnants of the nerve agent that nearly killed a former Russian spy and his daughter

At a press conference on Thursday, officials said both Ms Sturgess and Mr Rowley remain in a critical condition and that the risk to the general public remains low.

Cara Charles-Barks, the chief executive of Salisbury District Hospital, said: 'Having been exposed to a nerve agent, they are clearly acutely unwell.

'We have seen other members of the public who have come to the hospital with concerns about their health following this incident.

'We have carried out appropriate tests and none of these individuals have needed treatment.

'Given the events in March, we at Salisbury District Hospital have developed a wealth of knowledge and experience in treating with those exposed to nerve agents.'

She stressed that the hospital 'remains completely open and operating as normal',

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