Most of the defendants in a major sex trafficking case are Somali refugees from populations in Minnesota and Tennessee, CBS Minnesota reported.
Of the 30 people indicted in 2010, 15 are now facing charges related to the trafficking of two girls.
The sex trafficking ring was believed to have been run by Somali gangs from Minnesota to Tennessee: The Somali Outlaws, the Lady Outlaws and the Somali Mafia.
The trail could involve over 200 witnesses, and the victims may testify during the trial, according to the Star Tribune.
The defendants are facing charges of conspiracy to commit sexual trafficking of children by force, fraud or coercion.