[fabrizioitwloch]

A sex experiment which went horribly wrong left a woman dead and her lover in critical condition. They drank a mixture of what is believed to be a sex stimulant with an isotonic drink.

They were found by passers-by at a roadside in Sungai Petani at midnight on Wednesday, reported Harian Metro.

The man was seen trying to support the woman who was very weak and could hardly walk at the time.

"He was trying to get help to send her to hospital as she was already foaming in the mouth," said a source.

The woman was later pronounced dead at the Sultan Abdul Halim Hospital while the man had been admitted to the emergency ward.

The source claimed that the 23-year-old woman and the 20-year-old man had checked into a motel on Tuesday night.

Early investigations showed that the couple had consumed a drink, believed to be a sex stimulant, mixed with an isotonic drink.

A family member of the woman said she had earlier left the house, saying she wanted to buy new clothes for Raya.