Moments after a hit/run driver crashed into cars on Oyster Bay Road around 8 p.m. on Monday, a security guard shot the apparent driver on Mt. Vernon Street, in front of the Dever school.

The driver, Leroy Wiggins, a.k.a., Chris Summers, 40, of Dorchester, suffered a non-life-threatening injury and is expected to be arraigned today on charges related to the incident, the Suffolk County District Attorney's office reports.

Boston EMS transported a total of seven people to local hospitals for treatment and observation - Wiggins, three adults and one child in the cars he allegedly hit and two men in uniforms.

According to the DA's office, Wiggins "appeared to be passed out" in a vehicle when approached by security guards. He quickly revived, however, and sped off.

"At one point, he allegedly drove toward security guards and at least one guard discharged a firearm," the DA's office reports.