Created: 06/07/2014 11:06 PM KAALtv.com
(ABC 6 News) -- A big breakthrough after months of drug investigations for the North Central Iowa Narcotics Task Force and the Cerro Gordo County Sheriff's Office.
Authorities have made several arrests.
Christopher Black, Jeremy Collins, Duane Robinson, Edward Walter and Jonathan Wheeler all from Mason City are being charged with delivery of methamphetamine.
Toccara Delaughter of Clear Lake was also charged with delivery of methamphetamine.
And Roger James Foat was charged with two counts of delivery of hydromorphone.
All suspects are on $10,000 bond each.
The following suspects have not been located and are still wanted by law enforcement:
Lewy Lee Curtiss, Daniel Lee Vavrik, Broderick Christopher Vollbrecht, Christopher Michael Winters and Adam Andrew Mertz all from Mason City, IA; and Derek Anthony Demory of Albert Lea, MN.
If you have any information on any of the suspects, please call authorities at (641) 430-4701.