The Saskatchewan Roughriders have announced import linebacker Sean Lucas is retiring from the CFL.

"It is a difficult decision, but it is also the right decision for me," Lucas said in a release Thursday.

"I would like to thank the organization, Rider Nation and especially my teammates for a lifetime of memories."

Lucas spent the past six seasons with the Green and White. In that time, he tallied 372 defensive tackles, 23 special team tackles, 17 pass knockdowns, nine tackles for a loss, seven quarterback sacks, five interceptions and three tackles for a loss in 86 regular season games played.

He also played in four playoff games and two Grey Cups and was a member of the 2007 championship team.

In his last season, Lucas played in 15 regular season games and tallied 61 defensive tackles, a team leading five tackles for a loss, three pass knockdowns, two special team tackles and one interception. The 28-year-old originally signed with the Riders as a free agent in May 2006.

"The entire Roughrider organization thanks Sean for his contributions and dedication to the team over the last six years," Riders general manager Brendan Taman said in the release.

"He has made the decision to move on to the next phase of his life and we wish him nothing but the best."