The mystery over Michael Jackson's death took a dramatic new turn last night after police began tracing the trail of drugs believed to have killed him.

Prescriptions appear to have been written in several different names – those of members of his entourage.
This raises the prospect that the 50-year-old singer set up an illegal supply chain to satisfy a dependency on painkillers that his doctor would not prescribe.
Last night it was claimed that the star was spending up to £30,000 a month on prescription drugs including the sedative Xanax and the narcotic pain reliever Vicodin.
Details found on prescriptions at the house where he died were being investigated by detectives yesterday.
The Daily Mail understands that inquiries are particularly focussing on a bodyguard who was at the Los Angeles mansion where the star collapsed on Thursday.