The DEA's Rocky Mountain Field Division announced the arrests and possible deportation of 10 of Colorado’s worst drug criminals under "Operation Return to Sender."

In the last two-and-a-half weeks, the DEA has made over 90 arrests as part of Operation Return to Sender. After Stephen A. Smith Said He’d Divorce Serena Williams Over That Viral Super Bowl Moment, Her Real-Life Husband,

Neither the Drug Enforcement Administration nor the Immigration and Customs Enforcement have filed any state level referrals for prosecution in Adams County. CBS News Colorado learned this nearly two weeks after dozens were arrested as part of an immigration enforcement operation.

The DEA said they were trafficking fentanyl pills, other drugs and weapons, and were a major money-making machine.