Las Vegas police want to hear from anyone who witnessed a fatal attack on a city bus in March that left a 74-year-old man dead. Cadesha Bishop was arrested earlier this month after surveillance video seemed to show her push Serge Fournier off of a parked bus. The man later died from his injuries at a hospital. Witnesses told police Fournier had scolded the woman for cursing at other passengers moments before he was attacked. A preliminary hearing is set for next week.