LINCOLN, Neb. (AP) — Authorities in Lincoln are investigating three fires at the same trailer home in less than a month.

Firefighters were called to the third blaze shortly before 12:30 a.m. Monday. The cause of Monday’s fire hadn’t been determined, but the previous incidents have already triggered an arson investigation.

Authorities say the first fire was on the trailer’s porch. The second blaze engulfed the trailer. The latest fire started in a garbage can, and the flames spread to the home.

Lincoln Fire Capt. Jeremy Gegg says firefighters were able to extinguish the flames without any damage to adjacent homes.

Fire Inspector Ken Hilger says no damage estimates were available for the third fire because the trailer was already considered a total loss.