A third person has been arrested in connection with a Mexican drug cartel’s operation in Black Hawk County. 22 year old Megan Heying of New Hampton has been charged with Money Laundering. She is accused of distributing methamphetamine as well as participating in the movement of drug proceeds from Black Hawk County to Culiacan, Sinaloa, Mexico. 46 year old Richard Mahorne and 31 year old Mark Sayles were arrested last week after being accused of transferring $900 to the Manjarrez Drug Trafficking Organization. Law enforcement says to expect more arrests in the coming days.