St. Louis, MO (SportsNetwork.com) - The St. Louis Rams officially re-signed linebacker Jo-Lonn Dunbar on Tuesday.
Dunbar was suspended for the first four games of the season after testing positive for a performance-enhancing substance and had been released by the Rams just prior to Week 1.
He is expected to practice with the team on Tuesday.
Dunbar is coming off the most productive season of his five-year NFL career, compiling 115 tackles and a personal-best 4 1/2 sacks along with two interceptions while starting all 16 games for the Rams in 2012.
The Rams (1-3) face the winless Jacksonville Jaguars in Week 5.