Kolkata, Oct 16 (IANS): Four people, one among them a woman, were arrested Wednesday from the West Bengal capital for the gang-rape and then blackmailing of an 18-year-old married woman.

The victim filed a complaint with the Parnasree police station that she was repeatedly gang-raped by three men, and a woman accomplice filmed the assault. The four later used the recording to blackmail her.

"We arrested the four accused, including a woman, today (Wednesday), and booked them for several offences including gang-rape," Deputy Commissioner (South West Division) S. Mitra said.

The victim was facing marital trouble when she approached the prime accused, a 49-year-old man, who assured her that her problems would be solved with tantric intervention.

The victim said in her complaint that she was called to a certain location by the prime accused for certain rituals September last. and was raped by the prime accused and two others.

A woman accomplaice who was at the spot with the three men filmed the crime, the victim said.