Sarawati puja is a festival in which Hindus, especially students, worship Saraswati, their goddess of learning.
Witnesses said some 8-10 persons attacked the temple at Monindra Parha of Fivang Union Parisad over loudspeakers being played during the puja and defaced the idols on Tuesday morning.
Fivang Police Camp in-charge Tarique Rahman confirmed the incident. Two persons had been arrested, he said, and the police were looking for others involved.