Two men were seen running away from a burning storage shed at 858 Butternut after 4:30 p.m. Friday.
Abilene Police and the Fire Department's Fire Investigation Unit detained the two men who are homeless.
Officials on the scene told KTXS the men were living in the storage building without permission. There was a warming fire inside the building that became out of control. Police are looking into whether alcohol played a factor.
The men face charges of reckless arson.
No one was injured in the fire.