Palestinian authorities are investigating the beating death of a 19-year-old man who was attacked by so-called "healers" during an exorcism sought by the victim's family.According to AFP, Ashraf Mashaal was suffering from various psychiatric deficiencies which prompted his parents to solicit the services of two "sorcerers."Mashaal, a 19-year-old college student who was enrolled at Hebron University, was subjected to an "exorcism" performed by the two healers, a man and a woman.