Police say they're looking for a hit-and-run driver Friday, following what they say was an intentional collision in the Castro.

According to the San Francisco Police Department, the 45-year-old male victim was standing outside his truck at the corner of 18th and Castro Streets at 2:55 Thursday when the incident occurred.

Police say that a 72-year-old male driver approached in his vehicle, and began a "verbal confrontation" with the younger man.

Suddenly, the driver accelerated his vehicle into the victim, police say, then sped away in an unknown direction.

The victim complained of pain following the attack, but refused medical attention. The suspect has thus far successfully eluded capture, police say, and no arrests have been made as of publication time.