Kansas City running back Larry Johnson was told Tuesday to stay away from the team while the NFL and the Chiefs complete their investigation into his use of a gay slur.

The latest chapter in Johnson's stormy career with the Chiefs began Sunday night when he questioned coach Todd Haley's football credentials on his Twitter account. He used a gay slur during an exchange with one of his Twitter followers. A day later, he used it again as he brushed off reporters and told them he would not comment, according to the Kansas City Star, which recorded the comment.

Haley refused to address the matter Tuesday, saying it was still being investigated.

"I'm just not going to comment any further because there is some stuff going on," Haley said.

Johnson, 29, signed a five-year contract extension in 2007 that included $19 million guaranteed and could be worth up to $45 million. The team could be checking to see whether Johnson violated contract provisions that would allow the Chiefs to cut him with reduced financial obligation.

The Chiefs said they've told Johnson he would not be allowed to practice with the team or participate in team activities until the matter was resolved, though he has not been suspended. NFL spokesman Greg Aiello said the league would have no comment pending the investigation.

Johnson apologized to Haley, the team, fans and league "for the words I used. I regret my actions. The words were used by me in

Jets: New York re-signed cornerback-kick returner Justin Miller, acquiring a replacement for the injured Leon Washington on special teams. Miller was a second-round draft pick of the Jets in 2005 and made the 2007 Pro Bowl season after leading the AFC with a 30.1-yard average on kick returns. He was waived by the Jets last season and signed with the Raiders, who re-signed him for one game this season before releasing him Oct. 6. Washington, a Pro Bowl returner last season, was placed on injured reserve after breaking his right leg Sunday in the Jets' 38-0 victory at Oakland.

Redskins: A doctor's second opinion on Chris Cooley's broken right ankle gave the Pro Bowl tight end hope he could return to the field in a month. Cooley will have surgery today, and he gave details via his Twitter feed: "3 pins go in the ankle tomorrow. Hopefully be back in 4 weeks." Earlier in the day, coach Jim Zorn said Cooley would be sidelined a minimum of six to eight weeks and probably would be placed on season-ending injured reserve. But Zorn also said Cooley was awaiting a "final evaluation" from another doctor to make sure.

Eagles: Running back Brian Westbrook (concussion) will go through medical tests before his status for Sunday's game against the New York Giants is determined. Coach Andy Reid says he won't risk Westbrook's health at the expense of the game. ... Former Cal wide receiver DeSean Jackson (strained foot) should be ready to play Sunday.

Titans: Team owner Bud Adams informed coach Jeff Fisher that he wants Vince Young to start over veteran Kerry Collins on Sunday against Jacksonville, according to the Tennessean. In an interview on WKRN-TV, Fisher said the quarterback decision would "be revealed over the next couple of days." He also denied any tension existed with Adams. Fisher has stuck with Collins through an 0-6 start.

Falcons: Running back Aaron Stecker was signed by Atlanta ahead of Monday night's game in New Orleans. Stecker played nine seasons in the NFL, including five with the Saints (2004-08). The Falcons also placed rookie safety William Moore (hamstring) on injured reserve.

Buccaneers: The team released lineman Marcus Johnson, 27, after his arrest on a charge of driving under the influence. A Tampa, Fla., police lieutenant says he found Johnson sleeping Tuesday in a car near Raymond James Stadium.