British police declare 'major incident' over unknown substance
London: British police have declared a major incident suspecting that a man and a woman in a critical condition in hospital near the English town of Salisbury may have been exposed to an unknown substance.
"We are keeping an open mind as to the circumstances surrounding this incident," police said in a statement.
"Wiltshire Police and partners have this evening declared a major incident after it is suspected that two people might have been exposed to an unknown substance in Amesbury.
"Emergency services were called to an address in Muggleton Road, Amesbury on Saturday evening after a man and woman, both in their 40s, were found unconscious in a property," police said.
Amesbury lies 3 kilometres east of Stonehenge and 11 kilometres to the north of Salisbury, where in March Russian former spy Sergei Skripal and his daughter Yulia, fell severely ill after being poisoned by nerve agent.
Police on Wednesday said it was initially thought the man and woman in Amesbury had possibly used crack cocaine or heroin from a batch of contaminated drugs, but it added that further testing was ongoing.
A Public Health England (PHE) spokesman said: "The current advice from PHE England, based upon the number of casualties affected, is that it is not believed that there is a significant health risk to the wider public. This will be continually assessed as further information becomes known."
The pair were being treated at Salisbury District Hospital, which remains open as usual, police said.
Reuters