AL-BAHA — A mother and her 20-year-old son were killed Monday inside their house at Al-Saidan village, allegedly by two fellow students at her son's college. Police have arrested one of the suspected killers after the other children, four daughters, said they saw him murder their mother and brother while they were hiding in another room. A search is ongoing for the other murderer. The cause of the murder has not been identified yet as investigations are ongoing. Police said the two men stole all jewelry in the house in addition to SR10,000 and some guns. The four sisters and their father, who was out of the region on business, are said to be still in shock.