The Missouri State Highway Patrol is investigating a shooting suicide at the Cape Girardeau Police Department. Police say a robbery suspect shot himself while he was being held inside of a holding room at the station early Friday morning, May 29. Police say the 24-year-old had concealed a stolen gun on his person and was able to fire off one shot. Jail staff and officers attempted to render aid and called for additional medical personnel for help, but police said the man died from the self-inflicted gunshot wound. The man who, was from Jackson hasn’t been identified at this time. Police say ey will be conducting an internal investigation into the incident, but they have also the requested the Missouri State Highway Patrol to head the primary investigation. Officials say the suspect was taken into custody after officers responded to a robbery in the 100 block of Cape West Parkway around 12:20 a.m. The suspect was also considered a person-of-interest in a recent weapon violation within the city.