Police are investigating a deadly snowmobile crash in Lapeer County on Feb. 15, 2021. MAYFIELD TOWNSHIP, Mich. – Thomas Boyce, a 49-year-old man from Dearborn Heights, was killed Monday after he struck a tree with a snowmobile in Mayfield Township. According to authorities, Boyce was visiting friends in Lapeer County at the time of the crash. This case remains under investigation by the Lapeer County Sheriff’s Office. More: Lapeer County news