Dozens of missing kids were found and three people busted – including a sex offender – in a five-week-long citywide joint operation conducted by the US Marshals Service, NYPD and Homeland Security Investigations.

Officials tracked down 41 “critically missing children” – including those coerced by adults into criminal activity or sex trafficking, or frequent runaways – during “Operation We Will Find You 2,” which spanned more than a month and wrapped up on Monday, the marshals said.

A sex offender with local warrants was arrested, in addition to two other people, who were wanted on charges including robbery and parental kidnapping, according to the marshals.