MILWAUKEE -- Shots were fired at an Uber driver as he attempted to pick up a group of people on Milwaukee's east side Friday night.

Police were called at approximately 7:10 p.m. to Bartlett Avenue and Lafayette Place.

Milwaukee police said the shooting stemmed from an earlier road rage incident.

They said the Uber driver honked at another driver. In turn, the other driver followed him to his next pickup and discharged his gun.

One witness, who did not want to be named, said he was about to grab the door handle of the car when he heard gunshots.

"The back window of the Uber exploded," he said. "I looked to my right and saw [the suspect] with his driver side window down, shooting a pistol."

There were no injuries in this incident.

Police said they haven't made any arrests but said they are looking for a dark-colored pickup truck, possibly a Chevy Avalanche.