WALLER COUNTY, Texas – What began as a traffic stop in Waller County led to a drug bust with authorities seizing large amounts of cocaine and methamphetamine. It all started after investigators said they stopped a vehicle on US-290 BUS near Waller on July 6 around 1:30 p.m. Inside the vehicle were Jose Agustin Morales, 34, and Cornelio Casteneda Diaz, 35, both from Mexico.