A female police officer was caught having a boozy on-duty romp with a sergeant, according to a report.

The policewoman was half naked when she was discovered with her colleague in a bathroom at a police building in Manhattan, New York.

Lieutenant Brandi Sanchez, 39, and Sergeant Lambros Gavalas, 46, have had their guns and badges taken away since the alleged steamy session.

A female Sergeant spotted the pair in the cubicle and reported them to a Lieutenant, who went into the bathroom and told them to get out.

However, the pair refused to budge and when the two officers returned to the lavatory they found Sanchez and Gavalas were still there.

The female officer’s gun has been taken away (Image: Facebook)

The Lieutenant once again ordered them to leave, prompting Gavalas to walk out without saying anything.

The female Sergeant then climbed onto a toilet in the cubicle next to where the pair were hiding and looked over the wall.

She saw a semi-nude Sanchez, who told her she was a police officer and then left.

The officer was found five minutes before her shift was due to end, according to an internal police report.

The New York Post reports that she was unable to be interviewed because of her ‘compromised mental state’.

New York City Police Department did not deny the allegations but confirmed that an investigation was underway.

They have both been placed on modified duty.

Sandchez was unavailable for comment.