London, Aug 6 - A blood-stained woman's blouse has been found hanging in the late pop legend Michael Jackson's wardrobe at his Los Angeles mansion, sparking further rumours of foul play in his death.

The white garment, which still had its $3.99 price tag attached, was not seized as evidence by police officers investigating the singer's death, despite legal experts speculating that it may have been used to mop up the singer's blood, reports thesun.co.uk.

'It's pretty extraordinary that a bloody shirt would not have been taken as evidence,' said top US attorney Craig Silverman.

A LA police spokesperson refused to say why the garment hadn't been taken as possible evidence.

'I don't know why it wasn't taken. Our detectives aren't speaking about the investigation so we won't have an answer at the moment. I don't foresee one for some time,' said the police spokesperson.

Jackson died June 25 from a suspected cardiac arrest, and it has been widely alleged he was given surgical anaesthetic Propofol by his personal physician Conrad Murray earlier in the day to help him sleep.