A followup investigation into alleged drug activity on the Tusculum College campus resulted in the arrest Sunday of John Thomas Witherspoon, 19, who listed an address in Madison, Tusculum police Master Patrolman Dustin Jeffers said in a report.

An investigation turned up information that Witherspoon "had been dealing on campus," the report said.

During a "knock and talk" interview, Witherspoon gave permission to search his dorm room and a vehicle.

Two packages containing six grams of suspected marijuana were found in a pair of pants, along with a set of digital scales, the report said.

Also found was "a large sum of cash," all in $10 and $20 bills, the report said.

A second set of scales was found in a desk drawer during the search, along with bags used to package marijuana that contained "residue," the report said.

Police received consent to look at messages on Witherspoon's cell phone that "showed evidence of various drug deals," the report said.

"These actions took place on a college campus in a drug-free school zone," the report said.

Witherspoon was "also confirmed as a Gangster Disciples gang member," the report said.

He was charged with possession of a Schedule VI drug for resale and possession of drug paraphernalia.

Bond was set at $11,000. Witherspoon was scheduled to appear today in General Sessions Court.

Two other Tusculum students were charged last week with sale or delivery of a Schedule VI drug.