Federal authorities have indicted 20 Indiana residents on methamphetamine trafficking charges.

More than 100 officers began making arrests Thursday morning and all 20 suspects had been arrested by Friday morning.

Assistant U.S. Attorney Brad Blackington says the indictments represent two separate rings of suspected meth traffickers.

Blackington said one group acquired meth in Indianapolis and Arizona and transported it to Terre Haute for distribution to other dealers. He says the other bought meth from a source in Indianapolis and distributed it in the Terre Haute area.

He says the two groups were responsible for the distribution of 3 to 5 pounds of meth per week in the Terre Haute area.