WAUSAU – A 56-year-old Mosinee man accused of sexually assaulting a woman and hiding her in a wooden box in his basement was convicted Thursday on charges of sexual assault with the use of force and false imprisonment.

Allen Jamroz will be sentenced June 26 in Marathon County Circuit Court, following a presentencing investigation.

Police say the victim was at Jamroz’s home to meet up with his granddaughter on Dec. 28, 2016. That’s when Jamroz lured the victim into his basement, attacked her with a homemade stun gun, then placed duct tape around her wrists and knees before forcing her to perform a sex act, according to the complaint.

After the assault, Jamroz forced the woman to send a text message to two people telling them she was leaving the area, police said. He then forced her into a box, but she was later able to escape by forcing the lid off the box and prying open the basement door with a hammer, according to court documents.

As part of a plea agreement, charges of kidnapping and battery were dropped. At sentencing, Jamroz faces up to 46 years in the Wisconsin Prison System and potential fines of more than $100,000.

Jamroz remains in the Marathon County Jail, where he has been held on a $30,000 cash bond since his January 2017 arrest.