North Queensland police have been accused of spear-tackling and manhandling an Indigenous man just hours before he died in custody.

Trevor King’s wife Regina called police on Saturday morning because he was talking of suicide, and witnessed them spear-tackling him, pushing his face into the dirt and straddling his back.

The lawyer of Mr King’s family, Stewart Levitt, said he appeared to be dead by the time police got him into an ambulance.