A former Metropolitan Police officer began a sexual relationship with a woman while he was investigating her, an investigation found.
John McCarthy, who was a police detective at the time, began sleeping with the woman in 2017 while he was being investigated for harassment, an Independent Office for Police Conduct (IOPC) investigation found.
During their relationship Mr. McCarthy also sent the woman sexual text messages, it was found.
The harassment case against him was then discontinued.
Mr McCarthy also borrowed £ 3,580 from the woman in a series of payments between June and September 2017, the IOPC found.
The IOPC said it found evidence that Mr. McCarthy never intended to pay the woman.
The then-DC did not declare his relationship with the woman, or the money received from him, it said.
However, an investigation into Mr. McCarthy was launched in January 2018 following a referral from the Met Police.
In March 2020 the investigation found that there was a case for gross misconduct against the officer.
Mr. McCarthy then resigned from the force on September 5 of this year.
In a statement, IOPC director Sal Naseem said: “It is clear that John McCarthy has taken destructive steps for his own sexual gratification and personal gain.”
Mr. Naseem added that Mr. McCarthy’s behavior had a “corrosive” effect on public confidence in the police.
“His behavior had a serious and devastating impact on his victim, and a corrosive, lasting impact on public confidence in individual officers and in the police service in general,” he said.
A police disciplinary panel ruled that Mr. McCarthy would be removed without notice for gross misconduct if he had not already resigned.