The continuing saga of Suge Knight’s murder trial has taken another turn, with the former rap impresario issuing a lawsuit demanding around $300m (£245m) from Dr Dre and alleging that his former protege has tried to have him killed to avoid paying money owed.

The suit – waved away by Dre’s attorney Howard King – is a response to a wrongful death lawsuit filed against Knight, Dre, Ice Cube and Universal Music. That case was brought by Lilian Carter, the widow of Terry Carter, who was run over and killed by Knight’s truck during filming of the NWA biopic Straight Outta Compton. Knight also faces a murder charge for Terry Carter’s death.

“Marion ‘Suge’ Knight’s murder trial has been shrouded in much mystery. This cross complaint reveals why,” wrote Knight’s attorney, Thaddeus L Culpepper, in the new complaint. Knight claims Dre was responsible for the incident in which Carter was killed, claiming he was trying to escape men who were trying to kill him. He also claims Dre was behind a gun attack in a Hollywood club in August 2014, in which Knight was shot multiple times.