Old Goa Police have registered a case against five unidentified men, who barged into the government primary school around 11.15 am during recess time and locked the girls inside the toilet for about a minute.
However, one of the five accused unlocked the toilet before fleeing from the spot, a complaint lodged by the school management says.
Police Inspector Shivram Vaigankar said that all the girls were around nine years old.
The students immediately reported the matter to the school principal, who filed the complaint.
Police said that they were yet to ascertain the motive behind such a bizarre behaviour.
