One of the young women attacked has been admitted to hospital with serious burn injuries, the police said.
At least two school girls were burnt in an acid attack while returning from school in Punjab. The two attackers, who used a motorcycle, have escaped, said police sources in Gurdaspur, where the attack took place.
The girls have been admitted to a government hospital in Amritsar; one of them is critical.
The main accused, 19-year-old Saajan, had earlier been suspended from school on charges of assault.
He has allegedly told the police said that he threw acid to take revenge from the girls.
A case has been registered against the accused and his unidentified accomplice and search is on to find them, police said.