SAN DIEGO (AP) -- Junior Seau, a 12-time Pro Bowl linebacker who played with the San Diego Chargers and the Miami Dolphins during a 16-year NFL career, will announce his retirement Monday.

Seau will make the announcement at a news conference at Chargers Park on Monday afternoon, the team said in a statement Sunday.

The 37-year-old Seau spent the past three seasons with Miami after being acquired from San Diego.

He was released by the Dolphins in March after missing 17 games the past two years due to injury. He finished both seasons on injured reserve, and an Achilles' tendon injury limited him to seven games in 2005. Seau ended the 2004 season on injured reserve because of a torn pectoral muscle.

In spring 2003 the Chargers, feeling that Seau's best years were behind him, allowed his agent to shop for a trade. Seau then was sent to Miami.