Maniac who randomly beat beloved security guard to death at NYC subway station found mentally unfit for trial

The madman charged with randomly pummeling a beloved security guard to death at a Brooklyn subway station has been found mentally unfit to stand trial, a court heard Friday. David Mazariegos, 25, will be committed to a state psychiatric hospital after flunking a mental health exam — following the alleged merciless, unprovoked Oct. 7, 2025 killing...