BLACK RIVER FALLS, Wis. -- A Jackson County jury finds a Melrose man guilty of the brutal sexual assault of a woman for more than 15 years.

Rodney Tollefson , 41, was arrested in May 2011 after an investigation by Jackson County and Manitowoc County authorities.

The investigation that began in April 2011 showed Tollefson brutally and repeatedly sexually assaulted the young woman from the time she was four,in 1995, until 2009

The woman testified about the graphic memories of the assaults at Tollefson's trial this week.

The jury took three hours to find Tollefson guilty of 36 felony counts, including repeated child sexual assault and first-degree sexual assault.

Tollefson will be sentenced at a later date.

He also faces four felony second-degree sexual assault charges and a felony false imprisonment charge in Manitowoc County. Tollefson is accused of sexually assaulting the same woman in that county, most recently during Christmas 2010.

Tollefson's nephew, Phillip Ronning, who was also charged for assaulting the woman in Jackson County with his uncle, was sentenced in October 2011 to 30 years in prison and 10 years extended supervision.

Ronning pleaded guilty to sexually assaulting and beating the woman with Tollefson in a secluded area in August 2010.