Carl Anthony Williams was a convicted murderer and drug trafficker from the Australian state of Victoria. He was the central figure in the Melbourne gangland killings. He was sentenced to life imprisonment with a non-parole period of 35 years for ordering the murders of three people and conspiracy to murder a fourth (which was unsuccessful)On 19 April 2010, while incarcerated at Barwon Prison, Williams was beaten to death with the stem of an exercise bike by another inmate, Matthew Charles Johnson