A former Prince George’s County police officer was sentenced Thursday to five years in prison in a far-reaching corruption probe that eventually led federal agents to former County Executive Jack B. Johnson (D), his wife Leslie, a former County Council member; other county officials and prominent real estate developers.

Chong Chin Kim, 44, who worked for more than 16 years for the Prince George’s County Police, pleaded guilty last year to a scheme to smuggle alcohol and millions of untaxed cigarettes from Virginia to Maryland.

During his sentencing hearing in federal court in Greenbelt, Kim called his conduct “disgraceful.”

“I would like to apologize to the people who are so dear to me; my family, my friends and the police department,” Kim said in court.

Kim and others paid an undercover agent $1.7 million for more than 17 million untaxed cigarettes, which were then resold, costing the state and federal governments $2.7 million in lost taxes, prosecutors said.

Kim and another officer, Richard J. Delabrer, a former Prince George’s police sergeant, helped protect the illegal shipments while carrying their police-issued guns. Kim, on at least one occasion, also assisted in unloading contraband cigarettes while dressed in his official police uniform, armed with his service weapon and driving a marked Prince George’s police car, according to court documents.

This Post has been updated.