"At this point, we don't know what the altercation stems from or what led up to the shooting," police said.By Meghan Schiller

PITTSBURGH (KDKA) – A fight between a driver and bicyclist at a downtown bus stop led to gunshots Tuesday afternoon.

The shooting happened at Seventh Street and Fort Duquesne Boulevard in front of a Port Authority bus stop.

(Photo Credit: KDKA Photojournalist Dennis Lane)

Police say one man was shot multiple times in the leg and the alleged gunman has been arrested.

Police say 46-year-old Christian Johnson is charged with criminal attempt homicide, aggravated assault, aggravated assault by vehicle, gun charges, receiving stolen property, recklessly endangering another person and reckless driving.

Law enforcement says Johnson and the victim knew each other.

Police told KDKA’s Meghan Schiller there was some sort of fight between Johnson, the driver of a white sedan, and the victim — who was on a bicycle.

According to police, the driver hopped the curb in his car, hitting a PAT bus shelter, then got out and allegedly opened fire, striking the victim in the leg multiple times.

“At this point, we don’t know what the altercation stems from or what led up to the shooting. Police are investigating. One male is in custody, one male is in the hospital,” said Pittsburgh Police Public Information Officer Chris Togneri.

The cyclist was taken to the hospital in stable condition.

Meghan Schiller