UPPER MERION, Pa. (CBS) — Crews rushed to the scene of a serious accident in Montgomery County Wednesday afternoon.

Police say the crash happened on Gulph and Baptist Trace Roads in Upper Merion.

Authorities say a helicopter has been requested and at least one person is reportedly trapped.

No word on what caused the accident or how many vehicles were involved.

Stay with CBSPhilly.com for the latest on this developing story.