MADISON, Wis. -

At about 2 a.m. Thursday, a 20-year-old man was knocked unconscious after yelling at a passing car alleged to be driving recklessly.

The victim, a UW-Madison student, was celebrating Halloween in the early morning when witnesses said a silver four-door Nissan was observed speeding. After the car nearly hit a pedestrian crossing Langdon Street, bystanders shouted at the driver.

Police said the man driving braked, backed up and pulled into a driveway. He and a passenger got out of the car, and a confrontation with the pedestrian group ensued. Police said the victim was hit in the head, though it is not specified if punches were thrown by one or both of the suspects. After the attack, the suspects got back into the vehicle and left.

The victim suffered a broken cheekbone and nose.

One suspect is described as a thin-build black male, about 6-feet tall, 150-175 pounds, in his 20s. He was wearing a silver hoodie and whitewashed jeans. The other suspect is a black male also in his 20s, about 6-feet-2-inches tall, 185-200 pounds with thick shoulder-length dreadlocks, chubby face, wearing dark-colored jeans and a maroon-and-yellow hoodie with “weird” writing on it.