28-year-old Tigard man stabs mother, charges with first-degree assault and unlawful use of a weapon.

28-year-old Tigard man stabbed his 48-year-old mother at their apartment on Friday. The mother, with non-life-threatening injuries, informed a neighbor and went to the hospital. Her son called 911 from a nearby business to turn himself in. He was arrested and charged with first-degree assault and unlawful use of a weapon. Police are investigating and seeking information from witnesses.