A Joshua Tree man was arrested Saturday morning, accused of beating up his girlfriend. According to a Sheriff’s report, deputies were called to the 60800 block of Alta Loma Drive about 9:40 a.m. The victim told deputies that Donald McGrath, 30, beat her up, and then held a knife to his own throat and threatened to kill himself. The woman got away and called for help from her work, as she was afraid he would show up at her place of employment. After an investigation, Donald McGrath was arrested on suspicion of felony spouse abuse, making criminal threats, and stalking. McGrath was booked into West Valley Detention Center with his bail set at $250,000.