13-year-old James Yoblonski missing for more than a month, may be trying to live off the grid in Wisconsin

The worried father of a 13-year boy who disappeared more than a month ago in a possible attempt to survive “off the grid” plans to mortgage his home in order to offer a cash reward for his safe return.

William Yoblonski, of Reedsburg, is offering a $10,000 reward for tips that bring his son, James Yoblonski, home after the child ran away on June 12 and hasn’t been seen or heard from since, he told WiscNews Monday.

“The $10,000 reward is only if he’s found,” the dad said. “In the last three weeks, we haven’t gotten any tips or anything.”

Sheriff’s deputies said that they believe James ran away from home to go on a survivalist mission.

The 13-year-old was trying to live “off the grid,” and investigators found evidence of a makeshift campsite they believe the boy created in a state park, Sauk County Sheriff Lt. Steven Schram told WiscNews.

James allegedly drove off in his family’s van and may have taken his father’s firearm as well as two survival guidebooks with him, police said, according to WKRC.

Cops tracked James’ cellphone to an area near Sauk Hill and US Highway 12, where they found the van abandoned on the side of the road and the phone nearby the same day he was reported missing.

Investigators found various items they believe belonged to James at the campsite as they searched Devil’s Lake State Park — which offers visitors hundreds of campsites as well as showers, restrooms and drinking water taps.

William Yoblonski told WiscNews that he believes someone may have picked up his son since searchers have not been able to find him or any signs of him since the discovery of the first campsite.

“Come out from wherever you’re hiding,” the concerned father said he would tell his son. “We want you home. We love you very much.”

The Sauk County Sheriff’s Office has no updates on the missing child case, a detective told the local publication. The office last issued a statement about James’ disappearance on July 7.

Anyone with information on the whereabouts of James Yoblonski is asked to contact the Sauk County Sheriff’s Office at 608-355-4495.