A police constable from Stockport who was suspended from duty after appearing on the BBC
documentary, Secret Policeman, has resigned from Greater Manchester Police.
He's the fifth GMP officer to step down since the screening of the undercover documentary last month.
The programme showed secretly filmed footage of trainee policeman making racist remarks.
All the officers from Greater Manchester Police who were investigated following its broadcast have now left the force.
Two other officers have resigned from North Wales and Cheshire police.
On Tuesday it was revealed that BBC reporter Mark Daly will not face charges.
The Crown Prosecution Service said it had advised Greater Manchester Police there was insufficient evidence to take action for alleged deception.