A man shot while sitting in his car near a Roxbury intersection is being treated for life-threatening injuries at a local hospital.

“We do not believe there is any concern to the general public in this neighborhood,” Boston Police Deputy Superintendent Paul McLaughlin said Saturday evening from the scene on Townsend Street at its intersection with Warren Street in Roxbury.

It was there, McLaughlin said, that just before 4:30 p.m. Saturday Boston Police received a ShotSpotter alert indicating gunfire. Shortly thereafter, community members called in to report someone had been shot.

When officers arrived at the scene, they found a man sitting in a small white car and suffering from gunshot wounds, McLaughlin said. Boston EMS transported him to a hospital where, at the time of the press conference a little after 7 p.m., he remained in critical condition.

McLaughlin said police were interviewing multiple witnesses and are “trying to pull it together, to see what the underlying reason for the shooting would be, whether it had anything to do with road rage or some other altercation.”

There was no suspect description available Saturday evening.