A SUSPECTED dangerous dose of drugs has put nine people from the same Victoria Park property in hospital overnight.
The victims are believed to be backpackers or students.
A police spokeswoman said officers arrived at the Colombo Street home about 11.40pm to find “numerous people in an unconscious or semi-conscious state”.
Four of the victims are in intensive care.
Three men are in Royal Perth Hospital, with two of them in the ICU.
Two men and a woman are in Sir Charles Gairdner Hospital, two of whom are also in the ICU.
A further two men and a woman are in Fiona Stanley Hospital. Their condition is unknown.
The spokeswoman said police believe the people are visitors to WA.
A St John Ambulance spokesman said nine crews were sent to the property with three area managers and a clinical support paramedic.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000.