ST. PAUL (WJON News) -- Investigators arrested 20 people during a law enforcement operation this week targeting violent offenders in Bemidji and the surrounding areas. The law enforcement effort, which took place July 22-23, focused on offenders wanted for firearms violations, shootings and narcotics offenses. Some people were taken into custody on outstanding warrants. Law enforcement also recovered four illegal firearms, one gun silencer, ammunition and small amounts of illicit narcotics. MN DPS MN DPSMN DPS MN DPSMN DPS MN DPSMN DPS MN DPSAll of those arrested were booked into either the Cass County Jail, the Hubbard County Jail or the Red Lake Detention Center pending formal charges.