Man arrested in Yuma after allegedly sexually assaulting two minors YUMA, Ariz. (KYMA, KECY) - The U.S. Marshals Service (USMS) captures a man accused of sexual assault on minors. USMS said Daniel William Lehmann was arrested on Thursday and faces charges of sexual contact with a minor, aggravated incest, and sexual contact without consent. “The U.S. Marshals Service considers the capture of child sexual predators a priority,” said the United States Marshal David Gonzales. “This is another great example of local and federal law enforcement agencies partnering to ensure those who violate the trust of children are held responsible for their actions.”