PHILADELPHIA (CBS) – Philadelphia Police are investigating an accident involving at a least four vehicles Monday night.

It happened at about 6 p.m. at Martin Luther King Drive and Montgomery Avenue.

Police say Martin Luther King Drive is closed from Montgomery Avenue to Falls Bridge in both directions.

Officials say a 38-year-old man was taken to the hospital in stable condition.  He was trapped inside a car for 30 minutes.

Stay with for the latest on this developing story.

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