HOUSTON -- Detroit Lions wide receiver Scotty Anderson and his brother were stabbed in the parking lot of a nightclub early Monday after a scuffle with another club patron, police said.

Anderson's brother, Stevie, once a receiver with the New York Jets and Arizona Cardinals, was critically wounded, Houston police spokesman Alvin Wright said.

Scotty Anderson also was wounded in the fight, Wright said, but his injuries didn't appear to be life-threatening.

Two men were arrested after fleeing the scene of the fight, police said. Police wouldn't release the identities of either man. It was not immediately clear whether charges had been filed against them.

The fight happened shortly after the Crystal Nite Club closed for the night, police said.

At about the same time, Wright said, a man fired a gun into a crowd of people at the other end of the parking lot. The man was later arrested. Wright said police do not believe the incidents are related.

"Nothing is final. Nothing is complete,'' Wright said. "We're still in the middle of an investigation.''

Lions spokesman Matt Barnhart did not have any immediate comment.

Anderson, who is entering his third year with the Lions, caught 25 passes for 322 yards and one touchdown last season. He was drafted in the fifth round out of Grambling State.

Last year, Anderson was the victim of a carjacking in Louisiana. A federal judge sentenced a woman last month to three years in prison for her part in the carjacking of a customized Cadillac owned by Anderson.