Benjamin Harouni, DDS (Photo: Smile Plus Dentistry) SAN DIEGO (Press Release) — District Attorney Summer Stephan announced murder and attempted murder charges Tuesday against a 29-year-old El Cajon, California man who opened fire at a dental office on February 29, killing one and injuring two others. Mohammed Abdulkareem, 29, has been charged with murdering Benjamin Harouni, a Jewish dentist, and two counts of premeditated attempted murder with gun and great bodily injury allegations. He was arraigned Tuesday afternoon in San Diego Superior Court. He faces life in prison if he is convicted of …