Valletta (Malta), Apr 11 (DPA): Michael Jackson's death was a conspiracy and his doctor is not the only one who should be held responsible, the singer's sister, LaToya Jackson, claimed Saturday.

Speaking at a news conference in Malta, LaToya Jackson said she believed Dr Conrad Murray, Jackson's personal physician, was not the only person involved in the superstar's death. Murray has pleaded not guilty to an involuntary manslaughter charge in Jackson's June 25 death.

"This was definitely a conspiracy and other people should be brought to justice. I believe Dr Conrad was simply the fall guy," she said. She claimed other people had instructed the doctor to ensure the singer eventually overdosed on the drugs he was administered.

The 'King of Pop' died, aged 50, from an overdose of Propofol, a powerful sedative used as a general anaesthetic, while preparing for 50 concert dates at London's O2 arena.

LaToya Jackson suggested that money was the motive behind her brother's death.

"Michael was worth more dead than alive. They knew what they had planned if this were to happen. They also knew that Michael was not capable of doing 50 shows," she said.

The singer, who is currently working on her new album, was in Malta to accept a lifetime achievement award on behalf of her brother.