Police began Friday to round up 51 Harlan County residents charged with drug crimes after a nine-month undercover investigation by Operation UNITE, according to a news release.
UNITE detectives, Kentucky State Police officers, and officers from the police departments in Harlan, Lynch, Benham and Loyall started arresting people early Friday.
By 1 p.m., police had arrested 29 people and were searching for others.
Most of the charges in the case involved selling the prescription painkiller oxycodone.
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Several of those charged with selling drugs were habitual offenders, said Paul Hats, law-enforcement director for UNITE.