Boston Police Commissioner Edward Davis announced Monday that he was stepping down after leading the city’s police department for seven years, including overseeing the response to the Boston Marathon bombings.

“I feel very positive about leaving at this time, on my time,” Davis said, as quoted by Boston’s WBZ. “The department is in much better shape now than when I came here.”

Davis said he has received “several offers,” including a fellowship at Harvard University, but has yet to accept any particular offer. As WBZ points out, Davis was rumored to be on the short list to fill the Homeland Security secretary post.