A freshman at Cal Poly is suspected of ending his life through the use of chemical gas on Friday, the last day winter quarter finals.
At about 3 p.m., a construction worker discovered 19-year-old Osvaldo Julian Ponce, a physics major, unresponsive in a black Lexus. Signs had been posted on the windows warning of the poisonous gas inside.
Streets were shut down and a hazardous materials safety team was called to the scene to remove the poisonous gas, identified as hydrogen sulfide, from the vehicle. Police are continuing to investigate the suspected suicide.

