The woman had no clothes on, not even underwear as she wandered across a promenade in Barcelona, Spain. Stunned families watched her before she was forced back into the toilet by a shirtless man who stepped out of the same toilet after her.
The naked woman forcefully resisted as the man pushed her back in then locked the door before he stood guard outside to make sure she doesn't emerge.
The footage was filmed in the Raval district which has apparently become notorious for anti-social behaviour.
There is speculation the woman may have been the victim of a sexual assault, though this has not been verified. One local is reported to have said the woman is well known in the area as having mental health problems.