The Atlanta Braves pitching coach accused of shouting anti-gay slurs at fans at the San Francisco's AT&T Park on Saturday issued a written apology Wednesday while MLB Commissioner Bud Selig said the allegations are "troubling" and an investigation is under way.

Roger McDowell was accused of making the anti-gay remarks by Justin Quinn, a father of twin daughters, during a press conference today with high profile attorney Gloria Allred.

Quinn said he saw McDowell shout, "Are you a homo couple or a threesome?" and also saw him use a baseball bat to simulate a sex act.

"I am deeply sorry that I responded to the heckling fans in San Francisco on Saturday. I apologize to everyone for my actions," McDowell said in the statement.

Quinn said at the press conference that he was attending the San Francisco Giants game with his wife and 9-year-old daughters when he heard McDowell say the slurs. According to Allred, Quinn said he asked McDowell to watch his language in front of his daughters and that McDowell responded with, "Kids don't fucking belong at the baseball park."

McDowell then allegedly picked up a bat "and started walking in a threatening manner towards Quinn," Allred said. Quinn said McDowell also asked him, "How much are your teeth worth?"

The Atlanta Braves also issued their own statement on the incident and said the team would investigate the allegations.

"We were made aware of an incident in San Francisco this past Saturday," the Braves said in their statement. "We are concerned by these allegations and the behavior described by a witness today. This in no way represents the Braves organization and the conduct we expect of our employees. We will withhold further comments until we finish gathering information."

Baseball Commissioner Bud Selig also issued a statement Wednesday, saying the allegations were "troubling."

"I was informed today that Roger McDowell, a coach of the Atlanta Braves, is being accused of engaging in highly inappropriate conduct toward fans at a game in San Francisco. Although I do not yet have all the facts regarding this incident, the allegations are very troubling to me. The Atlanta Braves have assured my office that they will immediately investigate the allegations, and report the results of the investigation to me. After I have all the facts, I will make a determination of how to proceed," Selig said.