Police and residents of southeast Portland are searching for a man they've dubbed the 'Portland Pooper' after he was spotted defecating outside an office building several times in the last month.

After the man was caught on camera mid-act, a business owner plastered flyers around the neighborhood featuring stills from the video, hoping to flush the city of its infamous pooper.

Police have identified the man as a suspect and say he could face charges of offensive littering.

Public poop: A man in southeast Portland man was caught on film defecating on an office building after a business owner set up a camera because a mystery person had pooped on his office several times in the last month

Wanted: The man was dubbed the 'Portland Pooper' and Portland Police have said the unidentified man is a suspect in the search for the serial defecator

In the camera footage, which appeared to be filmed with a hidden camera, a man pulls down his pants and leans against a wall.

While holding a roll of toilet paper in his hands, he poops on to the ground below. The man looks around as he performs the act and even looks as if he's squinting into the camera.

'I find it interesting that he has toilet paper with him, it's very pre-planned,' Catrina Salazar, who works at a nearby hair salon, told KOIN.

'You just don't really know what to expect around here. People, they like do their own thing, they kind of march to the beat of their own drum.'

Caught on film: The man was spotted on camera pulling down his pants and leaning up against a wall before defecating on the ground below

Regular spot: The man has pooped by the office building several times in the last month, and the last time he was spotted was over the weekend

The serial pooper has defecated in the area several times, the latest being over the weekend.

Flyers posted across the city feature close-up pictures of the man's face and tell people to call the police if they know anything.

'This guy has been pooping in public areas around the SE Portland area,' the flyers read. 'If you have more information, call the Portland Police.'

Outdoor toilet: He looks around the area as he defecates, and at one point it even looks like he has spotted the hidden camera and he stares into the lens