An unknown woman was caught on camera ripping a sign supporting Spencer Pratt for mayor from a Los Angeles yard — prompting online sleuths to name and shame her.

A resident reported the Studio City theft to cops, explaining that he checked his property’s surveillance footage on Wednesday afternoon and saw two “female teens or young adults” grabbing the sign before walking off with it, according to a police report obtained by The California Post.

“I uploaded a still and I have clearer video at home,” the resident, a 65-year-old male, wrote in the report. “I do not recognize these persons, they do not live on my street and I have never seen them in the area before.”

A video uploaded by journalist Daniel Guss appears shows a young woman in athletic attire snagging the sign by putting it under her arm to uproot it. The suspect then carries the sign away as another woman follows behind.

The theft follows reports of several unconfirmed sign thefts that feature a similar-looking woman.

Guss reported that the suspect is “approximately 5’2” to 5’4” with what appears to be a lengthy tattoo on the left arm. She was spotted wearing Nike high-top sneakers with dark laces while drinking from a “‘skinny’ 12-ounce can.”

Pratt is challenging Mayor Karen Bass for her seat alongside competitor socialist councilwoman Nithya Raman and a host of others.

An Emerson College poll from earlier this month placed Pratt in a second-place tie with Raman at 23% support, with Bass leading the pack at 35%.