A man was given a powerful cocktail of anti-psychotic drugs after being mistaken for an escaped mental health patient

Man mistaken for escaped mentally-ill patient is held by police and given cocktail of anti-psychotic drugs before hospital realises its mistakeMan was picked up by police who mistook him for the escaped patientDetained in hospital where he was given powerful drugs which made him illAuthorities have now opened investigations into the incident

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UPDATED:

19:34 GMT, 26 December 2012

A man fell ill after being given anti-psychotic drugs when he was mistaken for a patient who had escaped from mental health hospital.

The man was picked up by police and detained at Graylands Hospital, in Perth, Australia, after a patient escaped in mid-December.

Authorities did not realise they had the wrong man until after they gave him the powerful drugs, leading to him needing hospital treatment.

Mental mix-up: The man was mistaken for a patient who had escaped from Graylands Mental Hospital in Perth, Australia, and was not identified correctly until after he had been given anti-psychotic drugs

Mental mix-up: The man was mistaken for a patient who had escaped from Graylands Mental Hospital in Perth, Australia, and was not identified correctly until after he had been given anti-psychotic drugs

The case of mistaken identity took place after Graylands Hospital called to help locate a patient who had left without permission, News.com.au reported.

A man with the same description was brought back to the hospital by police, where staff then mistakenly identified him as the escaped patient and administered various anti-psychotic drugs to the innocent man.

It is unclear exactly when staff realised their mistake, but the unnamed man had to be treated overnight in hospital.

According to reports, WA Mental Health Minister Helen Morton apologised for the 'dreadful mistake' and an investigation into the incident is now underway.

Strong, wrong dose: Staff administered various anti-psychotic drugs to the innocent man before realising their mistake

Strong and wrong: Staff administered various anti-psychotic drugs to the innocent man before realising their mistake