A California man was arrested Saturday after Indiana State Police say a routine DOT inspection led to the seizure of approximately $500,000 worth of methamphetamine.

According to ISP, around 4:20 p.m. on March 21, a state police trooper stopped a semi truck on Interstate 70, near the U.S. 231 exit, for a routine DOT compliance inspection. However, police say that during conversations with the driver, the trooper developed probable cause to search the semi.

During the search, police say the trooper found 100 pounds of methamphetamine in the trailer and a handgun in the cab.

ISP says the street value of the meth was estimated at half a million dollars.

The driver, identified as a 33-year-old man from San Bernardino, California, was arrested and booked at the Putnam County Jail on preliminary felony charges of dealing methamphetamine and possession of methamphetamine.

(NOTE: 13News has a policy not to name suspects until formal charges are filed by a prosecutor.)

The Putnam County Prosecutor’s Office will make the final charging decision.