A Loveland man who runs a massage business is accused of attempted sexual assault on a child. 54-year-old Mark Brinkman was arrested after a four-month investigation. The Larimer County Sheriff’s office says Brinkman was allegedly advertising illegal massage services involving sexual acts at his business, Mark’s Leisure Massage. Undercover agents from Homeland Secuirty contacted Brinkman who agreed to perform illegal sex acts on the agent and a minor. He operated his business out of his home and an office on North Boise Avenue.