Vietnamese police and state-run media say a man threw two large cans of acid at a woman who rejected his marriage proposal and at seven of her relatives during a child's birthday party.

Officer Nguyen Huy Thang of Dong Nai province says the 54-year-old man is in police detention while being treated at a hospital for minor injuries following the attack Sunday night.

Thang says the man splashed two cans of acid mixed with gasoline onto the 39-year-old woman and her relatives as they were celebrating her 1-year-old nephew's birthday. He then set the mixture on fire. The boy suffered minor injuries.

Thang says the woman and three others remain hospitalized Wednesday with extensive burns.