Officers of the Defiance City Police Department responded to a disturbance this (Tues.) morning on the Southeast part of the city, where a subject was killed.The call was received at 7:45am today from 632 Martin Street, which is off Ayersville Avenue.While investigating, shots were fired, and a suspect was pronounced dead at the scene.According to David O’Neil of the Ohio Bureau of Criminal Investigation which is now taking over investigation of the case, the victim is 58 year old Alex Johnson.The suspect had a knife, when he was shot.The Defiance Police Officer who fired the shot has been placed on administrative leave, pending an investigation, which is departmental procedure.