(CHICAGO) A man was arrested Tuesday in west suburban Naperville with more than $300,000 worth of heroin in his vehicle, police said.

Eduardo Lara Cardenas, 49, was charged with one felony count of unlawful possession with intent to deliver and one felony count of controlled substance trafficking, according to Naperville police.

Cardenas, of Elgin, was in vehicle that was stopped during a narcotics investigation at 2:30 p.m. near Center and School streets in Naperville, police said.

An Amtrak K9 unit alerted the police to the vehicle where officers found more than three pounds of heroin worth about $320,000, police said.

Court information for Cardenas was not immediately available.