Fire investigators have determined that a townhome fire in Flour Bluff Friday morning was intentionally set and is now being investigated as a case of arson.

The fire broke out just after 5 a.m. Friday at the Highland Oaks townhomes on St. Joseph near Glenoak. Crews were able to put out the flames within 20 minutes but two town homes were severely damaged.

Investigators said one resident was transported to a local hospital with non-life threatening injuries.