Larry Summers, the former treasury secretary and noted economist, announced he plans to resign from his role as a tenured professor at Harvard University — a move that comes amid growing scrutiny of his ties to convicted sex offender Jeffrey Epstein.

Summers’ connection to Epstein was long established, but a cache of emails released by the Justice Department last year showed the two men were closer than had been publicly known. Summers has not been accused of participating in Epstein’s alleged criminal enterprise.