MALAYSIA - Four women from China allegedly collected their faeces and urine weighing about 2kg in a plastic bag and threw it from the window in their 18th-floor apartment in Macallum Street Ghaut, George Town, Penang, because they were bored.

It is believed that the four were kept in the unit by their boyfriends and had came out with the smelly prank for the heck of it.

The bag of 'gold' almost hit a mother and child who passed by the Sri Saujana flat in Macallum Street Ghaut during the 9pm incident on Monday.

When the flat security guards and residents went to their unit to question their intention, one of the women said she had no keys to open the door and denied throwing the "bomb" from their unit.

One of the residents, who declined to be named, said she had seen the woman hurriedly inserting the glass window panel back to the window frame.

A security guard told newsmen here that it is common for residents there to throw their rubbish bags from their flats, but it was the first time that a bag of wastes had been thrown.

'These people either just wanted to the fool or they don't know how to use a toilet,' he said.

The residents joint management committee chairman Teh Cheng Khim said they found a prepaid SIM card packet which slipped out of the bag of faeces.

When they called the number, a mobile phone in the flat rang.

'When we asked their local boyfriends to open the unit's door later, we discovered that the toilet was functioning properly and there was ample water supply in the house. Why can't they just do their business in the toilet'' he said.

Teh said residents have developed a bad habit of throwing rubbish from their units.

'Such incidents came to a stop after we installed a CCTV system two weeks ago and threatened to distribute photos of them throwing rubbish.''

Two police constables later went to the unit to check on the women's passports and let them off with a stern warning.