The Patriots have been quite active since free agency started, and they’re not showing any signs of letting up after they added yet another defensive lineman Sunday night.

After signing Shaun Ellis this morning, Former Redskins defensive end Andre Carter just announced a little while ago that he’s coming to New England.

“I am proud to announce that I will be playing for the New England Patriots for the 2011 season. Thanks you for your prayers and support.”

Carter is a former 2001 first-round pick (7th overall – one pick after former Patriot Richard Seymour) who has 66 sacks over his career, including 2.5 last season in Washington.  He played in 16 games with five starts last year, and also had one pass defensed and a forced fumble.

For now, Carter already sounds like he’s excited to get started, Tweeting shortly after, “Time to hit the books,” followed by, “On to my play book.”

If you’d like to hear an interview from Carter, here’s a video during last year’s minicamp in Washington.