The NFL announced Lions running back Mikel Leshoure has been suspended for the first two games of the 2012 season for violating the league's substance-abuse policy.

Leshoure, a second-round pick in 2011, has not played in an NFL game. He missed last season with a torn Achilles after suffering an injury in training camp.

Leshoure was arrested twice on suspicion of marijuana possession in Michigan and pleaded guilty in May to possession stemming from a March 12 incident. Police said Leshoure attempted to consume marijuana as they approached his vehicle during a traffic stop.