(Gresham, OR) -- The city of Gresham is adding more surveillance cameras to reduce crime. The city has 23 cameras recording in higher crime areas with another 10 cameras on order. The city doesn't monitor the cameras, but if a crime occurs in the area of the camera they can use the video as evidence. Cameras have reduced crime 20 to 50-percent. The cameras are part of Gresham's Safe Gresham program that includes recruiting more police officers, more safety patrols with the Multnomah County Sheriff's Office, and investing two-million dollars in a Youth Violence Prevention program.