Matthew Johnson Lee

GARLAND, Texas (AP) - A 76-year-old grandmother working at a suburban Dallas convenience store is in a hospital after a robber emptied her cash register, doused her with a flammable liquid and set her on fire.

Authorities haven't identified the woman but customers at the store in Garland tell Dallas TV station WFAA she lived nearby and had worked there more than a decade.

She was able to briefly describe her attacker Sunday morning and a 36-year-old man was arrested a short time later after trying to break into some homes.

Officers on patrol spotted the fire inside the store and pulled up just as the woman, engulfed in flames, staggered outside. Police put out the flames. She's been unable to speak with authorities because of her injuries.

KTVT reports that Matthew Lee Johnson, 36, of Garland, was charged with robbery of an individual at his home. Police believe he's the person who set the clerk aflame and charged him with criminal attempt -- capital murder.