A sharp-toothed attacker remains on the loose in San Francisco, after a man who bit off another man's finger fled following an early-morning Mission Street brawl.

It was around 1 a.m. Tuesday when two men started fighting on Mission Street just south of Caesar Chavez Street.

During the altercation, a man in his 20s or 30s whom we'll refer to as "the biter" chomped off the right index finger of a 27-year-old man we'll refer to as "the bitee," Bay City News reports via CBS5.

"The fight is believed to have escalated from an argument outside a bar, and alcohol may have been involved," San Francisco Police Department spokesperson Officer Grace Gatpandan understates to the Ex.

Following the altercation, the biter fled the scene. He hasn't been spotted since, according to police.

The bitee was transported to San Francisco General Hospital to be treated for his injuries, which (obviously) aren't life-threatening.

Reports differ regarding the matter of the severed finger: KRON4 says that "The finger was recovered, but was not able to be reattached," while the Ex says that the digit "was not recovered." A call to SFPD to determine which of this accounts is correct had not been returned at publication time.