DALLAS - A former University of Oklahoma fraternity member who was shown in a video chanting a racial slur issued an apology Tuesday, as did the parents of a second student.

In a statement e-mailed by his father, Parker Rice said the incident caught on video "likely was fueled by alcohol," but "that's not an excuse."

"I am deeply sorry for what I did Saturday night," Rice said in the statement e-mailed to the Associated Press by his father. "It was wrong and reckless."

The parents of another student seen on the video, Levi Pettit, released a statement that said, "He made a horrible mistake, and will live with the consequences forever."

The chant referenced lynching and indicated black students would never be admitted to OU's chapter of Sigma Alpha Epsilon.

OU president David Boren has severed ties with the fraternity. On Tuesday, he expelled the two students who appeared to be leading the chant and said others involved would face discipline. It was not clear Tuesday night if Rice and Pettit were the two expelled students.

Rice said in his statement that he withdrew from the university Monday. The statement from Pettit's parents did not address his status with the university.

Rice said threatening calls to his family had prompted them to leave their North Dallas, Texas, home.

"Yes, the song was taught to us," he said, "but that too doesn't work as an explanation. It's more important to acknowledge what I did and what I didn't do. I didn't say 'no.' "

Pettit's parents, Brody and Susan Pettit, said in a statement online that their son "is a good boy, but what we saw in those videos is disgusting."

The Pettits apologized "to the entire African-American community [and] University of Oklahoma student body and administration."

Also Tuesday, Beauton Gilbow, the fraternity's house mother, issued a statement that addressed a video from 2013 showing her repeating a racial slur as music plays in the background. Gilbow said she was singing along to a song.

She said she was "heartbroken" by the portrayal that she was racist but understood how the video must appear in the context of the week's events.

Also, an online fund-raiser set up for Howard Dixon, a black chef who worked for the closed fraternity, has raised more than $40,000.