FBI Agents Track Down LAX Threat Suspect in Riverside

Federal Agents spent hours scouring through ex-TSA screener Nna Alpha Onuoha’s mini van for evidence Wednesday. Investigators say a church security guard spotted a man sleeping inside a minivan, and then asked him to leave, which lead to officers stopping the vehicle. Tony Shin reports from Riverside for the NBC4 News at 5 p.m. on September 11, 2013.