A garment worker was allegedly raped in Sadar upazila of Patuakhali on Monday after a relative called her out of house.
Family sources said Kohinoor Begum, sister-in-law of the victim, called the girl at her house in Uttar Badura Village at about 11:00am.
When the girl entered Kohinoor's house, her co-villagers Isa, 19, and Kawser, 20, who were hiding there, violated her and recorded the act in mobile phone set, they alleged.
The victim worked at a garment factory in Dhaka.
Police, however, detained two persons in this connection.
The victim was admitted to Patuakhali Medical College Hospital for medical test.
Officer-in-Charge of Patuakhali Sadar Police Station Mostafijur Rahman confirmed the matter.