UNITED STATES - He was passionate about flying model helicopters.
Tragically, the passion led to the 19-year-old's death on Thursday.
Mr Roman Pirozek was killed after the blades of one of his remote-controlled copters scalped him in a Brooklyn park, New York Post reported.
A handful of his friends watched in horror as he lost control of the toy aircraft which boomeranged and sliced off the top of his head.
Said Maria Delgado, 13. "I was playing at the park and we came into the clearing and we just saw a body on the floor... the whole top of his head was gone."
Mr Pirozek was pronounced dead at the scene, New York police officials said. The park where the incident happened is a sanctioned flying field by the Academy of Model Aeronautics.
A first responder said there was nothing that could have been done, the New York Daily News reported.
"The major blood vessels in his neck were involved and he just bled out very quickly," he said.