An altercation at a Valencia Street business turned violent Sunday night, when a worker at the venue used a nearby sign to smack the man with whom she was arguing.

According to the San Francisco Police Department, it was 11:35 p.m. Sunday when two workers at a business on the 100 block of Valencia Street, which is between McCoppin and Duboce Streets, got into a verbal dispute with a 24-year-old man.

As the argument progressed, one of the workers, a man in his early 40s, "jumped over the counter and followed [the victim] outside," police say. He then struck the younger man with his fists.

The other worker, a 35-year-old woman, joined in the attack by picking up a "Wet Floor" sign and using it to beat the victim, according to the SFPD.

The assault ended when the victim fled the scene in a vehicle, police say. He suffered non-life-threatening injuries in the incident, and was treated at an area hospital.

According to the SFPD, the man's assailants have not been arrested. Characterizing the incident as an aggravated assault, however, police maintain that the investigation into the altercation is ongoing.