What changedMetropolitan Police Chief Sir Mark Rowley defended the force's investigation into double murderer Simon Levy, acknowledging mistakes but disputing claims of inadequate case-building.Current stateThe Metropolitan Police is under scrutiny for its handling of double murderer Simon Levy, who was on bail and being monitored when he committed two more murders and a violent rape. The force's investigation has been criticized, with Labour MP Jess Phillips among those expressing concern. The Independent Office for Police Conduct is examining the four-year period from Levy's first conviction in 2021 to his final arrest in 2025. Levy was given a whole life prison sentence at the Old Bailey on Wednesday.Why it mattersThe case highlights concerns about the police's handling of violent offenders and the need for better monitoring and investigation to prevent further attacks.