Rittman Police are investigating a possible murder-suicide that took place Tuesday. Officers were called to an apartment building on S. Main Street for a shooting. They arrived at the scene to find one man shot in the backyard and the suspected shooter inside his apartment. A 71-year- old male victim was pronounced dead at the scene. Officers forced entry into the suspect’s apartment after hearing another gunshot from inside.  A 76-year-old man was found dead inside the apartment. The incident is under investigation.