A celebration for the first Thai woman ever to win an Olympic gold medal turned tragic Tuesday when a man was shot to death at the home of the parents of weightlifter Udomporn Polsak (search).

Polsak's parent's had been hosting about 500 people at their home in the northeastern Nakhon Ratchasima (search) province to celebrate their daughter's victory Sunday in the 117-pound (53 kg) class.

In the midst of the celebration, police said, a drunken teenager named Worayuth Wonsantai drew a handgun and fatally shot another guest, a 21-year-old man known as Boy Jonkoh, who was described as one of Polsak's relatives.

Police Capt. Chalermsak Chainarongsak said he didn't know the exact circumstances.

A report by the state Thai News Agency said a cousin of Udomporn had been wounded and later died, but it was unclear if this was the same person.

Chainarongsak did not say if any one else had been hurt.

Polsak was in Athens (search) at the time and will return with the rest of the Thai delegation at the end of the games.