Four Metropolitan Police officers are under investigation for misconduct after two women were murdered by a man they had complained about to the force.
Carl Cooper, 66, was jailed for life in July for the murders of Naomi Hunte, 41, who was stabbed in the chest, and Fiona Holm, 48, whose body has never been found.
Both women had been in a relationship with handyman Cooper around a year apart and had complained to police about his violence.
On Wednesday, the Met Police confirmed four of its officers were under investigation for misconduct in relation to a complaint Ms Holm made against Cooper for assault in April 2023, as first reported by The Times newspaper.
Ms Holm, of south east London, is believed to have died around two months later on June 20 2023.
A review into the management of Ms Holm鈥檚 complaint concluded a more thorough investigation could have identified key witnesses, who could have provided strong evidence for a victimless prosecution against Cooper.
During the murder trial, Woolwich Crown Court heard Ms Hunte, who was found stabbed to death on her sofa in south east London on Valentine鈥檚 Day in 2022, made a number of domestic callouts to police to her home in 2020 and 2021 and told them he was 鈥渙bsessed鈥 with her.
In a police call-out to her home on June 29 2021, she told officers Cooper 鈥渟talks me and I鈥檓 really scared now鈥.
Met Police Commander Paul Brogden said: 鈥淥ur thoughts will always remain with Naomi Hunte and Fiona Holm, and we again extend our sincere condolences to their families as they continue to grieve for these two beloved women.
鈥淲e have always been clear that we made mistakes when dealing with allegations against Carl Cooper.
He continued: 鈥淭hese matters are currently the subject of several reviews led by the Met鈥檚 directorate of professional standards.
鈥淎 senior officer from Lewisham met with Fiona鈥檚 family to discuss the review of the missing person investigation and I would like to repeat our direct and unequivocal apology for the way they were treated when they reported her missing.
鈥淚t is a matter of enduring regret that we did not have sufficient evidence to charge Cooper sooner for the murder of Naomi.
鈥淐ooper has still not revealed the location of Fiona鈥檚 body.
鈥淲e continue our enquiries to find her so that her family can finally lay her to rest.鈥
Sentencing Cooper in July, Mr Justice Johnson told the killer he was sure he had been a 鈥済reat danger to women鈥 over the years and that he had a 鈥渉istory of acting in controlling and coercive manner to your female partners鈥.
The four officers are being investigated in relation to Ms Hunte鈥檚 April 2023 GBH complaint.
This was referred to the Independent Office for Police Conduct, which advised it should be a local investigation, but the watchdog will review its findings, the Met said.