A source told KSTP a man in one vehicle pulled a gun on the other vehicle and started shooting in the middle of the parking lot with innocent people and gas pumps all around. Police radio traffic indicated, "someone was shot in the parking lot."

A MnDOT camera shows the Holiday gas station surrounded by law enforcement.

One witness who asked to remain anonymous, was afraid of being caught in the line of fire.

"I knew the distinct sound and knew the best place to be was somewhere else," the witness said.

KSTP/Beth McDonough KSTP/Beth McDonough KSTP/Beth McDonough MnDOT Traffic Cam Previous Next

A source confirmed an armed federal agent, a U.S. marshal, happened to be at the gas station and confronted the suspect.

"A man identified himself as a U.S. marshal and shot the man on the ground," the witness said.

Another witness said the second vehicle, described as a black Dodge Avenger, sped off, "and the the African American male was chasing the car and shot 6-8 times at it as the car was trying to enter the roadway."

The Minnesota Bureau of Criminal Apprehension (BCA) is leading the investigation. Agents, along with other U.S. marshals and officers from the St. Paul Police Department surrounded the scene and began collecting surveillance video and other evidence.

In a statement Wednesday night, the BCA said the marshal wasn't hurt. The person shot by was taken to the hospital to be treated for non life-threatening injuries.

More information about the circumstances that led to the shooting and the people involved is expected to be released Thursday.

Click the video box below to see a Facebook Live report from the scene from KSTP Reporter Beth McDonough. (Best viewed in full screen.)

KSTP has a crew at the scene, and is working to learn more details about the incident.

This is a developing story. KSTP is working to get more details on this story and will post updates as more information becomes available.

Stay with 5 Eyewitness News and KSTP.com as we follow this story. Refresh your page to make sure you are seeing the latest details.