May 13, 2013 7:43 AM by Swetha Iyengar
TUCSON - Tucson Fire now investigating what caused an abandoned house to catch fire early this morning.
It happened in the 3900 block of East Desmond Lane near Pima and Alvernon.
Calls came in to 911 around 3:15a.m. reporting flames, fire crews repsonded quickly and had the flames out in 20 minutes.