INDIANAPOLIS (AP) _ Authorities are offering a $5,000 reward for information leading to an arrest after two fires in as many nights in an Indianapolis west side neighborhood.

WTHR-TV reports (http://bit.ly/1pV1tEj ) the reward was offered Sunday, one day after 40 firefighters from four different fire departments needed about an hour to extinguish a large house fire in the neighborhood Saturday morning. Firefighters believe the 4,000-square-foot home was vacant.

Investigators say the fire looks suspicious and that it was the second fire in the same neighborhood in two nights.