Serpas will return to Loyola University, where he taught criminal justice from 1993 to 2001. After rising through the ranks in New Orleans, he headed the Washington State Patrol and the Metropolitan Nashville Police Department.
In 2010, Serpas returned to New Orleans.
"This has been a great run under very difficult circumstances. When I came back in 2010, we needed dramatic changes. Together with Mayor (Mitch) Landrieu and the brave men and women of the force, we have turned this department around and laid a strong foundation for the future," Serpas said at a news conference. "We began instituting the reforms of the consent decree, improved training and hiring standards, and modernized the department's facilities and equipment. Murder is down significantly."