LOS ANGELESAP —

The superintendent of Los Angeles public schools has resigned four months after he was put on paid leave during a federal investigation, the district’s Board of Education said Monday.

Alberto Carvalho denied any wrongdoing earlier this year and had asked to be reinstated as head of the nation’s second-largest district.

The FBI served search warrants on Feb. 25 at his home and the LA Unified School District’s headquarters. Two days later, the district’s Board of Education voted unanimously to place him on leave pending the outcome of the investigation.

In its statement released early Monday, the Board acknowledged it received a letter of resignation from Carvalho. The resignation was effective as of Sunday.