A man is under police investigation for allegedly raping a 22-year-old woman in Domain last week.

A senior officer at the Central Police Station has confirmed that the matter was reported to police on Sunday afternoon by the victim.

The woman was in a drinking party with the man and a group of friends when he allegedly dragged her into a room and raped her.

Arrangements are now being made to bring the officer in for questioning.

Meanwhile, police are trying to ascertain why the woman filed the report after waiting for a few days.