One man was killed and five people were wounded by gunfire at a New Year's bash that drew some 2 million people to Rio de Janeiro's Copacabana Beach, the government's official news agency said Tuesday.

A 29-year-old man died of a gunshot wound in the stomach, and a 63-year-old woman shot in the back and a 24-year-old man shot in the head were hospitalized in critical condition, the official Agencia Brasil news service reported.

Three other victims had injuries that were not life-threatening.

Police said the shots apparently came from revelers firing into the air in celebration.

About 1,300 officers worked the beaches on New Year's Eve in Rio, one of the most violent cities in the world with a homicide rate of about 50 per 100,000 people.

In the southern city of Rio Grande do Sul, a woman was killed by a stray bullet while having dinner with her boyfriend.