A 78-year-old Arizona man is being held in northeast Kansas after police reported finding $828,000 in cash in his pickup truck.

Junction City Police Chief Tim Brown says a K-9 unit stopped the westbound truck for a traffic violation around 9:30 a.m. Tuesday on Interstate 70.

Brown says a search turned up some boxes containing the cash in the bed of the pickup. Police seized the money and the truck, which had Colorado tags.

The Tucson man was booked into the Geary County jail on suspicion of speeding and transporting drug proceeds.