One of the six people killed in a plane crash on a suburban Phoenix golf course Monday night was an international business student at UNLV. Helena Lagos, 22, was among those killed in the crash in Scottsdale, Arizona. Lagos enrolled at UNLV in 2014, a university spokesman said. Two others killed — Erik Valente and James Louis Pedroza — also were from Las Vegas. Authorities have not said who was flying the plane. The cause of the crash is still under investigation.