Actinomycosis is a rare bacterial infection, caused by a group of Gram-positive bacteria which form the normal flora of oral cavity, gastrointestinal tract, and female genital tract. We present a rare case met in 2016 at Legal Medicine Bihor County Service, Romania of a 14 yr old boy in infection with Actinomyces israelii was able to produce sudden death. Infection with A. israelii was diagnosed with the help of histological exam, after medico-legal autopsy. Most probably, A. israelii was aspirated from the level of the oropharynx, it arrived into the lungs, and using the haematological way it spread into the heart, causing sudden death.
Keywords: Actinomyces israelii; Medico-legal autopsy; Sudden death.