The professional access to weapons plays a role in the choice of suicide instruments. Light and signalling ammunition is used by police forces, in the military, in sports, and professional navigation. An unusual suicide of a shipowner by means of a signal-pistol is presented. The signal cartridge was shot into the head. Penetrating the skull the cartridge entered the brain. The burning-out of the signal-set--taking about 10 seconds--initiated a flat-burning.--This case shows once more the dangerous misuse of light and signal ammunition.