Washington Redskins rookie safety Jordan Bernstine will miss the remainder of the season with a severe right knee injury, coach Mike Shanahan announced Monday afternoon.

Redskins rookie Jordan Bernstine tore his the  ACL, MCL and PCL in his right knee during kickoff coverage late in Sunday’s game. (Getty Images/Chris Graythen)

The team signed safety Jordan Pugh, a third-year pro out of Texas A&M.

 Bernstine, whom Washington drafted in the seventh round out of Iowa, tore the ACL, MCL and PCL in his right knee playing on the kickoff coverage team with roughly 11 minutes left in Sunday’s game at New Orleans.

Bernstine had to be carted off, and immediately after the game, Shanahan said although an MRI hadn’t yet been conducted, the Redskins’ trainers knew that the injury was serious and that Bernstine would miss significant time.

The Redskins learned the extent of the injury on Monday. Bernstine hasn’t had surgery yet, so it’s unclear how long it will take for him to recover, Shanahan said.

 “He was doing a great job,” Shanahan said. “He’s a great kid, a lot of energy and was doing a great job at the safety position and was doing an excellent job at special teams, so it always hurts to lose a guy like that. … But, it is what it is. He’ll do a great job in rehab and be ready to come back next year.”

Bernstine was one of six safeties to make the Redskins’ 53-man roster, but not even two weeks into the season, the team is down to three healthy players at that position. Tanard Jackson has been suspended indefinitely for violating the league’s substance abuse policy. Last Monday, projected starting strong safety Brandon Meriweather strained his MCL and PCL. He is expected to miss another week to three weeks.

 Second-year pro DeJon Gomes started in place of Meriweather and recorded five tackles and an interception. Madieu Williams started at free safety, as he has since he signed  with the team this offseason, and Reed Doughty saw time at strong safety. Doughty recorded a last-second interception against New Orleans on a Hail Mary pass to seal the victory.

Bernstine becomes the sixth Redskins’ player lost to a season-ending injury this season. Cornerback Chase Minnifield (knee), running back Tristan Davis (knee), nose tackle Chris Neild (knee), fullback Dorson Boyce (shoulder) and receiver Darius Hanks (shoulder) have been placed on injured reserve after suffering injuries during the offseason and preseason.

 Pugh was a sixth-round pick of the Carolina Panthers in 2010. He appeared in a total of 27 games in the last two seasons, starting three of them. The 5-foot-11, 210-pound Pugh has recorded 31 tackles and an interception. He spent training camp with Carolina before he was cut during the final week of the preseason.