Free agent defensive end Andre Carter announced via his Twitter account on Sunday night that he will be joining the Patriots. A 2001 first-round pick out of California by the 49ers — one pick after New England selected Richard Seymour — the 6-foot-4, 257-pound Carter spent the past five seasons with Washington. During his 149-game career, he has 66 quarterback sacks. His best season came in 2009 when he had 62 tackles and 11 sacks for the Redskins.

The Patriots released first-year cornerback Thad Turner and placed rookie free agent offensive lineman Kyle Hix on injured reserve Sunday.

Turner, 5-foot-11, 188 pounds, was originally signed by Indianapolis as a rookie free agent out of Ohio on April 30, 2010. He was waived by the Colts on Aug. 12, 2010, and signed to the New England practice squad on Nov. 10.

Hix, 6-foot-7, 325 pounds, was originally signed by the Patriots as a rookie free agent on July 27 out of Texas. Hix started 28 games at right tackle before moving to left tackle as a senior in 2010.

According to Adam Schefter of ESPN, the Patriots have agreed to a one-year deal with former Jets defensive end Shaun Ellis. Schefter reports that the deal is pending Ellis passing his physical.

Ellis, 34, has played his entire NFL career with the Jets since being selected with the 12th overall pick in the 2000 draft. He was the longest-tenured player on the Jets prior to leaving as a free agent. He is a two-time Pro Bowl selection, having represented the AFC in the 2003 and 2009 seasons.  

FOXBORO -- Newly-minted Patriots offensive coordinator Bill O'Brien said Saturday that star wide receiver Chad Ochocinco is progressing well in his effort to learn the Patriots offensive plays and system in time for the start of the season. 

Defensive end Mark Anderson, who played four-plus seasons with the Bears before playing 11 games for the Texans last season, was signed as a free agent by the Patriots, the team announced Friday.

Anderson, 6-foot-4, 255 pounds, has 154 tackles, 25.5 sacks, seven passes defended, five forced fumbles and two fumble recoveries in 77 career games (20 starts). Last season, in four games with the Bears and 11 with the Texans, he totaled 29 tackles (24 solo), four sacks and two passes defended.

According to a tweet from ESPN's John Clayton, former Dolphins linebacker Channing Crowder was given a physical by the Patriots Thursday. Crowder was released by the Dolphins last week.

Wrote Clayton: It is too early to tell if they will make him an offer.

FOXBORO — Like a protagonist in a Clint Eastwood Western, Logan Mankins has never been much for small talk. Case in point: When he was asked Thursday why he signed his one-year, $10.1 million franchise tender so quickly, Mankins responded with a small smirk.

New Patriots defensive tackle Albert Haynesworth is one of those players you could describe by saying (spins the cliché wheel): “His troubles are well documented.” At least I can say it because I spend a good chunk of time last year documenting them. Well, I hope.

FOXBORO – Contrary to popular belief, Patriots offensive lineman Logan Mankins said he has never had a problem with owner Robert Kraft.

FOXBORO -- In an effort to continue to look for more ways to bolster their defensive line, the Patriots had veteran defensive end Shaun Ellis in Foxboro for a workout,'s Christopher Price has confirmed.  

Patriots coach Bill Belichick is very familiar with Ellis, as the 34-year-old was selected by the Jets in the first round (12th overall) of the 2000 draft out of the University of Tennessee.