LOWER MERION TOWNSHIP, Pa. (CBS) – A HAZMAT investigation in Montgomery County shut down several roads for close to an hour Thursday afternoon.

A little before 4 p.m., authorities shut down Lancaster Avenue between Woodside Road and Wyoming Avenue and Woodside Road between Montgomery and Lancaster avenues in Ardmore.

A bottle was reportedly thrown out of the window of a passing vehicle which prompted the area HAZMAT team to respond. It is unclear what the substance is at this time. Authorities are investigating.

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