A police officer from the anti-gang Operation Trident, who was involved in the events leading to Mark Duggan’s shooting, is being investigated for alleged misconduct.
The officer, only known as ZZ46, is the first from Trident’s Operation Dibri, which targeted specific gangs, to be served with a formal disciplinary notice.
Mark was shot dead in north London on 4 August 2011 after police claim he collected a firearm from Kevin Hutchinson-Foster.
The inquiry is focusing on why ZZ46 did not ask the probation service for Hutchinson-Foster’s address, although he was on licence from prison.
The Duggan family has criticised the police’s investigation into the collection of the gun. They ask what connection Hutchinson-Foster had with police.
The Independent Police Complaints Commission (IPCC) launched its inquiry into ZZ46 after evidence emerged at an inquest into Mark’s death earlier this year.
A jury found that police could have done more to take the gun off the streets in the days before Mark allegedly collected it.
The IPCC has said its report into the shooting will be finished by the end of this year.
The Times newspaper reported this week that a Freedom of Information request it put to the IPCC showed that they deliberately withheld the truth that Mark did not shoot at police first.
A document obtained by the paper shows that the IPCC supressed a ballistics report because of "anti police feeling". Rachel Cerfontyne made the decision. She is now the IPCC's deputy commissioner.