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KANSAS CITY, Mo. — Investigators are checking out two vacant house fires within a block of each other in Kansas City, Kan.

It’s too early for investigators to release a definite cause, but it appears both houses may have been intentionally. Both houses were vacant and neither had power. The fires started within an hour of each other and about a block apart.

The first house fire was called in by neighbors around 1:30 a.m. Monday near 12th & Wood. It was heavily involved and tough to fight because the house was divided into apartments. Forty-five minutes into that fire a firefighter noticed a second fire located near 11th & Walker, located about a block away. Both floors of that home were fully engulfed in flames.

Firefighters pinpointed where the fires started in both homes but they have not yet determined a cause.

Firefighters had to return to one of the  homes after the fire rekindled about an hour later.

No one was injured.