An Arizona man has been arrested for the brutal beating death of his disabled mother.

Bullhead City police said they were called to a home just before 3 p.m. on Friday and found Janice Lynn Houston, 55, badly beaten. She was taken to the hospital, where she was pronounced dead.

Her son, 27-year-old Joseph Houston, was identified as the suspect and arrested after officers found him outside the home.

A family member told police that he had attacked and choked his mother on Thursday. He returned on Friday and threw a rock through the sliding glass door when he was denied entry.

Houston allegedly beat his mother when the family member ran to a nearby store to call for help.

The motive for the attack is unknown.

Houston was booked into the Mohave County jail on a charge of first degree murder.

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[Featured image: Joseph Houston/Bullhead City Police Department]