A five-year-old girl was alleged raped by a young man at Kashempur in the district town on Saturday evening.
Police arrested the alleged rapist, Sharifuzzaman, 22, son of Sheikh Ohiduzzaman of Rajnagar village in Kalaroa upazila and a student of Satkhira Polytechnic.
Officer-in-charge of Sadar Police Station Mostafizur Rahman said Sharifuzzaman took the girl to his room of a mess while she was playing near their house and raped her there.
The girl narrated the incident to her mother after returning home, he said, adding that the family later lodged a complaint with the police station.
The OC said they arrested the alleged rapist from another mess at midnight.
The girl was also sent to Sadar Hospital, he said.