QUINCY - Police say they seized about 50 pounds of marijuana and $65,000 in cash from a French Street home Sunday after watching activity there for more than a month.

Police arrested the man living at the apartment, Christopher Nguyen, 21, on charges of trafficking marijuana, possession of hashish, conspiracy to violate drug laws and violating drug laws in a school zone. He was due to be arraigned Monday.

Dougan said police went to the house at 65 French St. on Sunday evening after keeping the property under surveillance for about a month. Dougan said Nguyen refused to let police inside and investigators returned later with a search warrant, finding $65,000 in cash and about 50 pounds of marijuana spread “all over the apartment, in bags, in closets - everywhere.”

Dougan said police seized a 2009 Acurra as well as the cash and drugs. He said police plan to charge additional people in connection with the operation but made no other arrests Sunday.