Giants closer Sergio Romo was cited on New Year's Day at the Las Vegas airport, according to the Giants.
TMZ first reported the story Thursday, but it was later confirmed by the team.
A couple hours later Romo himself was apologizing for what happened and promising better conduct in the future.
“I would like to sincerely apologize about the recent events at the Las Vegas airport which brought negative attention to the San Francisco Giants organization and its fans. I love and respect the Giants, my teammates and our fans and promise to conduct myself in the future in the 'San Francisco Giants Way,'" Romo said in a statement released by the team Thursday night.
Earlier in the day, a member of public relations department at the Giants told NBC Bay Area that Romo was taken to the police station at the airport, where he was cited for "violating airport rules."
A TSA spokesperson said the incident happened at 8:30 a.m. and was sparked because Romo did not have the identification required to get through security.
Las Vegas police officer Marcus Martin told Bay City News Romo allegedly became agitated with Transportation Security Administration agents and was standing in an aggressive stance, had clenched fists, and didn't back down when police officers arrived.
"You can't be uncooperative with TSA officials or you will be taken into custody," Martin told BCN.
TMZ said Romo became 'angry and aggressive' after he wasn't able to provide officials proper identification to get through security. TMZ sited officials who said Romo appeared to be under the influence.
The TSA released the following statement which did not include a name:
“On Jan 1, 2013 at approximately 0830 PST at the Las Vegas McCarran International Airport, a male passenger was unable to provide identification required of travelers at the TSA Document Control station at the C-Annex Checkpoint. During the document identification process, the airport police noticed the individual engaged in a dispute with a TSA officer and took action. The security of other travelers was not compromised.”
It did not appear the incident ended in an arrest; only a citation.