The Indianapolis Colts signed inside linebacker Andrew Jackson to the active roster from the practice squad and waived/injured inside linebacker Mario Harvey on Saturday.

If Harvey clears waivers, he will be placed on injured reserve.

Jackson was a sixth-round draft pick of the Colts this year and was signed to the practice squad on Sept. 1. He had 326 tackles (174 solo), 6.5 sacks, five forced fumbles, four pass breakups, one fumble recovery and one interception in 37 games played (33 starts) at Western Kentucky.

Harvey has 15 tackles (13 solo) and 16 special teams stops in 28 games with the Colts since 2012. In three games this season, he has one special teams tackle and has spent time at fullback and inside linebacker. He was originally signed by the Colts to a reserve/future contract in 2012.