Mystery Surrounds Seven 'Mass Drug Overdose' Victims In Matching Wristbands

Three people are dead and are four are in hospital following a mass drug overdose which has left police baffled in Pittsburgh.

All seven victims -- all middle-aged males -- were wearing orange paper wristbands, police in Pennsylvania said. Their bodies were discovered early Sunday morning, and they were rushed to hospital.

Residents of the SouthSide Works City Apartments called 911 to report an unresponsive man inside an elevator at  just after 2am.

A short time later, a second man was found semiconscious on a nearby street.

Photo: Getty Images

Officers quickly traced the man back to the residential block, entering an apartment to find five more victims inside.

While three couldn't be saved, another three remain in a serious condition in hospital, and another is fighting for life.

Police confirmed the victims had all taken an unknown substance at the same time, in the same apartment.

“To be clear, this was not a case of a tainted drug being passed around or distributed in large volume at a large venue which could have affected even more people,” police said in a statement Sunday.

“It appears to have been isolated to a single location.”

Illicit Drugs
It's not known what drugs were taken. Image: Getty Images.

According to news outlet WPXI TV, none of those who overdosed were residents of the building, but were friends with somebody else that was.

"We have no indication there was a party there," Pittsburgh director of public safety Wendell Hissrich said of the block, adding that the building's air quality had been checked and there was no danger.

It wasn't immediately clear which drug or combination of drugs were taken, but investigators plan to interview survivors to piece together exactly what happened.

Photo: Getty

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The key line of inquiry is the wristbands.

Police have identified at least two venues that use similar orange bands, but are yet to name them. It is understood they all went to the same party before returning to the apartment where they overdosed.

Police are expected to talk to the survivors in the coming days to piece together exactly what happened.