ENFIELD, Conn. (AP) Enfield police have arrested 18 people suspected of drug-dealing and are seeking the arrests of nine others following a lengthy investigation into heroin and crack cocaine sales.

The Journal Inquirer reports that police Chief Carl Sferrazza said the investigation began last February with police infiltration of a bar frequented by a biker gang. He would not identify the bar or gang.

Sferrazza said police launched the lengthy investigation as officers gathered information about drug activities. Local police were helped by the federal Bureau of Alcohol, Tobacco, Firearms and Explosives and Drug Enforcement Administration.

Police have secured 54 arrest warrants for 27 mid- to high-level drug dealers who face 64 charges. Most charges are related to the sale of drugs, though others include assault and burglary.