Doctors have issued a warning about a potentially-fatal batch of heroin which has killed one man and led to a significant increase in overdoses among drug users.
A total of five patients have been taken to Milton Keynes Hospital for treatment so far.
Emergency medicine consultant Vimal Desai said doctors would usually expect to see one or two overdose cases a week but had seen all five in just 48 hours at the end of last week.
He added: “The reaction suggests an overdose of heroin, which appears to be a lot more potent than normal.
"It slows down their breathing and knocks their consciousness-level down.
“We would like to warn anyone thinking of taking these drugs that it may be a more potent batch, which can have a much more detrimental effect and can be fatal.”
Police have confirmed they are investigating the death of a man.
More top news
Read more of ITV Anglia's Christmas Shout Outs, passing on your seasonal messages to the special people in your lives.
Low cloud and mist developing overnight. Another mild night ahead. Generally rather cloudy tomorrow, with a few brighter breaks developing.
Generally cloudy with occasional outbreaks of rain during the morning. Some glimpses of the sun are possible. Feeling mild