(Sheridan, OR) -- An investigation is ongoing into the police killing of a man accused of stabbing two people in Yamhill County. The sheriff's office says several people called 9-1-1 to report the stabbing in Sheridan Monday night. Deputies responded to the scene and found the suspect armed with a knife. Deputies opened fire, killing the man. Two people were hospitalized for stab wounds, including one victim who was airlifted out on a Life Flight aircraft.