A federal grand jury indicted a Grand Junction truck driver on allegations of taking children across state lines to sexually assault them.

Michael Tracy McFadden had been convicted in 2015 of sexual assault of children in Mesa County and sentenced to a 324 years to life sentence, but the state Court of Appeals overturned his conviction because of a speedy trial violation, according to a news release from the Department of Justice.

The federal grand jury indictment from May 17 accused McFadden, 47, of traveling across state lines between December 2012 and January 2013 to engage in sexual acts with children. He was arrested Tuesday, the release said. McFadden made his first appearance in court Wednesday.

McFadden allegedly crossed state lines to engage in sexual acts with minors under the age of 12 or transport them across state lines to engage in sexual activity, according to the release.

He faces 10 years to life in prison, according to the U.S. Attorney’s Office.

The Grand Junction Police Department and the Federal Bureau of Investigation investigated the case and the U.S. Attorney’s Office is prosecuting.

The investigation is part of the U.S. Department of Justice’s Project Safe Childhood, which focuses on combating child sexual exploitation. For more information on the project, go to justice.gov/psc.