The Brief Fremont police said an allegedly armed suspect who held two people hostage was killed by police. Aerial video from SkyFox showed multiple police cars and officers in the area of Walnut Avenue between California Street and Fremont Boulevard. The location of the police activity is near Carlton Senior Living and Aegis Living, both on Walnut Avenue. "Additional calls indicated the person was last seen in a meeting room and was holding two people hostage," Mauldin said. Fremont police activity near Walnut Avenue, between California Street and Fremont Boulevard.