The Indianapolis Colts have placed cornerback Xavien Howard on the reserve/retired list, the team announced Wednesday.

Howard, 32, has surprisingly decided to end his nine-season career. The news came three days after he played 66 defensive snaps in a Week 4 loss to the Los Angeles Rams. 

He started all four games this season for the 3-1 Colts.

The four-time Pro Bowler and two-time NFL interceptions leader joined Indianapolis as a free agent in August. Howard spent the first eight seasons of his career with the Miami Dolphins.

The Colts also announced Wednesday that they have signed safety Trey Washington to the 53-man roster from their practice squad.

This story is being updated.