A case has been filed in this connection
Police on Sunday arrested a madrasa principal on allegations of raping four students in Sylhet.
The arrested, Syed Delwar Hossain, is the principal of Shahjalal Tamjidia Madrasa and Orphanage located at Mominkhola in Dakshin Surma upazila.
He is a resident of Phulsaind village in Golapganj upazila.
Police said there are 50 to 60 children in the orphanage and Delwar had been raping four of them in turns for several days.
As they protested, the principal used to punish them during the class hours, they said.
"A guardian called 999 on Sunday night and informed police over the matter," said Dakshin Surma police station Officer-in-Charge (OC) Monirul Islam.
Police conducted a drive around 8:30pm at the madrasa and apprehended Delwar, he said.
The law enforcers also rescued the four children.
A case has been filed against the principal, the OC added.