Indiana State Police By JON HAWORTH, ABC News (LOWELL, Ind.) — More than half a ton of marijuana with a street value upwards of $8 million was discovered by a sharp-nosed police dog during a routine traffic stop in northwest Indiana. The incident occurred at approximately 11:15 a.m. on Tuesday, March 16, when an Indiana State Police trooper stopped a van for a moving violation near the town of Lowell, Indiana, about 50 miles southeast of Chicago, according to a statement released by the Indiana State Police. The officer approached the vehicle with police to speak with the driver — later named as 31-year-old Christopher S. Colburn from McKinleyville, California — which subsequently led to an investigation of the exterior of the vehicle, including a canine sniff, that caused the officer to ask about what was inside the van.