DUBLIN -- Gunmen wearing disguises opened fire on boxing fans at a Dublin hotel Friday, killing one man and wounding two others in an attack that could reflect tensions within Ireland's top cocaine-smuggling gang. Fans attending the weigh-in ceremonies for a Dublin boxing event fled in terror as at least one group of gunmen opened fire inside the Regency Hotel. Mel Christle, president of the Boxing Union of Ireland, said the gunfire started within seconds of the final weigh-in ceremony. He said he saw one gunman, holding a handgun and dressed as a woman, flee through the crowd as two others dressed as policemen opened fire in the lobby. Other witnesses said at least one of those attackers was armed with an assault rifle. Christle, who was still at the event podium in a conference room off the lobby, said more than 200 fans - among them many young children and relatives of the boxers - ran or fell to the ground as others fleeing gunfire in the hotel lobby ran through the ceremony. He said the attack involved the targeting of specific individuals. "There's no doubt about that. This was not indiscriminate," Christle said in a phone interview. Christle said as the crowd cleared and he exited the ballroom, he could see the slain man's body slumped beside the hotel reception desk. "He was riddled," he said. Police said two other men were hospitalized with gunshot wounds. They said all three victims, men in their 20s or 30s, were believed to be members of the same group. Detectives said it was too early to specify a motive. But suspicion immediately fell on a deadly criminal feud involving the family of the boxer headlining Saturday's planned fight, Jamie Kavanagh. .