Utah Highway Patrol troopers on Monday seized more than 300 pounds of marijuana on Interstate 80, the state Department of Public Safety (DPS) said.

About 7:30 a.m. Monday, a UHP trooper stopped a pickup truck on I-80 at milepost 158 — several miles south of Coalville — for making an improper lane change, according to a DPS news release.

After speaking to the driver, the trooper became suspicious of criminal activity. In his conversation with the driver, the trooper was made aware the pickup truck was a rental from a third party, the news release said.

The trooper deployed his K-9, which gave a positive indication of a drug odor coming from the vehicle.

The trooper then found 356 pounds of marijuana in the bed of the truck.

According to State Bureau of Investigation agents (SBI), who are conducting the investigation, the marijuana originated in Northern California and was headed to Minnesota, the news release said.

SBI agents estimate each pound of the drug would have sold for $2,500, for a total of about $890,000 for all 356 pounds.

The investigation is still active. No further information is available.