A DISGRACED police officer who let down a young woman who was later murdered committed further misconduct, it has been revealed.

Former Sussex PC Jon Barry Mills contacted a vulnerable victim of crime on a mobile dating app.

He was found to have breached police standards relating to honesty and integrity, duties and responsibilities and discreditable conduct.

At a misconduct hearing at Sussex Police headquarters in Lewes, Chief Constable Giles York was told that Mills had “inappropriate contact” with the woman.

He had a previous professional link to her and exchanged messages with her.

The chief constable found the new allegations, from January to February this year, proved.

Mills resigned from the force in May over gross misconduct allegations in the Shana Grice case.

The Independent Office of Police Conduct investigated 14 officers over Ms Grice’s murder in Mile Oak in 2016.

Ms Grice, pictured right, was killed by ex-boyfriend Michael Lane who was stalking her – yet she had previously been told to stop wasting police time.

Retired PC Trevor Godfrey was also found to have acted with misconduct, while six other serving officers also faced internal disciplinary action.

On Friday, former PC Mills faced a second “fast track” disciplinary hearing over the second vulnerable victim and would have been sacked from the force if he were still serving.

Assistant Chief Constable Julia Chapman said: “Protecting vulnerable people is a priority for Sussex Police and we take any report of inappropriate behaviour extremely seriously.

“We have a responsibility to recognise abuse of power as a distinct area of corruption, behaviour which deflects from the honourable work of the vast majority of officers.

“Vulnerable victims must be able to trust those they turn to for help.”