BRIEF: Explosion reported at Columbia Heights business

March 29--First responders and firefighters from two departments are on the scene of an explosion in Columbia Heights, a dispatcher with the Anoka County Sheriff's Office confirmed.

Crews from Columbia Heights and St. Anthony were called to Invest Cast, Inc. on the 700 block of 39th Avenue NE. near Huset Park, about 12:23 p.m., the dispatcher said.

There was no word on what caused the blast at the firm that specializes in production of metal investment casting. Chemicals were involved, but no other information was immediately available.

It was not clear if anybody was injured.

Nearby homes and businesses were not being evacuated, the dispatcher said.

This is a developing story. Stay with StarTribune.com for updates.

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