A Yucca Valley man was arrested Monday afternoon, accused of beating up his girlfriend and threatening her with a knife. According to a Sheriff’s report, a woman called deputies from the 54600 block of 29 Palms Highway about 12:40 to say her boyfriend was beating her with a fist, and he had pulled out a knife. After an investigation, Randall Grabowski, 29, was arrested on suspicion of felony spouse abuse, booked at the Morongo Basin Jail, with his bail set at $50,000.