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ST. LOUIS, MO (KTVI)-An early morning explosion damaged a house in north St. Louis.  It happened around 1:30am Sunday at Linton and Penrose.  Firefighters say the explosion caused the vacant, two-story house to collapse.  Debris was blown across the street.

Two neighboring houses, also vacant, were also damaged.  Authorities say gas service was shut off after the former residents moved out over one week ago. The cause of the explosion in under investigation.