A Metropolitan Police The detective began having sex with a woman while investigating the alleged crime.
John McCarthy, then a detective constable, began sleeping with a woman in 2017 while investigating for harassment.
His actions include complete misconduct, the Independent Office of Police Conduct (IOPC) Was discovered on Tuesday.
Mr McCarthy worked at the Force’s North Area Command Unit in Enfield and Haringey, North London.
An affair with an unnamed woman for legal reasons began in January 2017, when the case was investigated for allegedly molesting her ex-husband and his mother.
The harassment case against her was later dropped.
Their relationship continued, and the IOPC investigation revealed that Mr McCarthy and the woman had sexual intercourse on 22 March 2017 at Wood Green Crown Court. They exchanged sex text messages.
IOPC Mr McCarthy said he received 5 3,580 loans from the woman between June and September 2017 and there is evidence that he may have intended to keep the money permanently. He was sent a gift suspect and did not announce a loan, relationship or gift to the bosses.
The woman later filed a county court claim for failing to repay when she was in debt, threatening to “live with noodles” and evict her. Mr McCarthy also failed to address this.
Their relationship ended in October 2017.
Mr McCarthy resigned from the Met last month, on September 5, four years after an investigation into his misconduct was received in January 2018 after being referred to the IOPC.
The IOPC’s two-day hearing concluded Tuesday, and if Mr McCarthy had not already resigned, he would have been fired by the Met. He has now been added to the list of former officers who could not work in the police.
Sal Naseem, Regional Director of IOPC, said: “It is clear that John McCarthy has taken predatory measures for his sexual satisfaction and personal gain. There is no place in the police for this type of behavior. This is the result that police officers should expect and receive.
“His behavior has had a serious and devastating effect on his victim and has had a devastating, lasting impact on the public’s trust in the individual officers and the police service in general.”
The victim said in a statement: “I felt that I should play in the game by giving him satisfaction. I feel obligated to play because there is a power imbalance between us.
She said Mr McCarthy was “integrated” in her life with her family, friends and neighbors becoming aware of their relationship.
“It affected confidence in the police because I think he didn’t tell any of his colleagues,” he said. “He knew about my weaknesses and my child, and he was aware of my financial flaws.”
Superintendent Simon Crick, commander of Mr McCarthy’s former unit at the Met, said: “Having sex with someone you are investigating as a suspect is contrary to the basic principle that a police officer must perform his duties with fairness and integrity.
He said: “The public deserves to have trust and confidence in the police and the result shows just how committed the Met is to rooting out the wrongs within the organization.”