The marijuana harvest from a Snellville home grew on Monday when police cracked open a trailer seized from the site of a pot "grow house."

Police obtained a search warrant after a Snellville Police Department drug dog smelled marijuana in hidden compartments inside the travel trailer, Gwinnett County police said Tuesday in a news release. Police found marijuana inside the secret compartments, along with about $99,000 in cash.

The trailer was seized Thursday from a home on Creekwood Drive, where officers found marijuana growing in an indoor lab.

The find comes on the heels of dozens of police raids on houses around metro Atlanta in the past two weeks. Police have been tracking a ring of basement marijuana growers in 14 counties around Atlanta, investigators said. The pot cultivators use sophisticated hydroponics — soil-free — to grow high-quality marijuana indoors. Investigators linked the operations to a transportation ring connecting Miami to New York through Atlanta.

Police said they also seized marijuana in a raid of another operation Monday, at a home on Mill Shyre Way in Lawrenceville. It was the ninth house raided in Gwinnett in the drug investigation, and the third around Lawrenceville. Other houses have been raided in Suwanee, Auburn, Dacula and Buford.

Police have arrested eight people in Gwinnett County and seized about $10 million in marijuana in connection with the drug investigation, police said.