A children's doctor at Assaf Harofe Hospital in Rishon Lezion is suspected of taking part in the murder of his sister to protect their family's honor, despite signing a pledge to protect her. Lod police chief Dep.-Cmdr. Ami Eshed said on Thursday that Suliman Abu Ganem and his four brothers were arrested for the murder last month of 19-year-old Rim Abu Ganem. A gag order had been in place on the case until Thursday. Suliman, the oldest of the brothers, is suspected of helping to plan the murder and providing the anesthetic material that was given to Rim, who was found drugged and strangled to death in a well near Rehovot two weeks ago.