A retired fraud squad detective has accused Victoria’s armed robbery squad of stocking weapons to plant on suspects, and bullying him to keep quiet about the death of a convicted bank robber in 1988.

A sworn affidavit by Bill Nash obtained by the ABC alleges Graeme Jensen was fatally shot by police, who then presented false evidence at the inquest into his death after planting a gun on him.

Jensen’s family are calling for a Royal Commission into his death, further fuelling the investigation into Victoria Police by the State’s corruption watchdog.