Minnesota police are probing growing allegations a man may have wheeled his dead mother's body into a Wells Fargo bank to use her to withdraw $850 from her account.

David Vanzo was charged with elderly neglect after police arrived at his home to find Caryl Vanzo, David's 91-year-old, badly neglected mother, dead in her bed wearing a robe and fur coat and reeking of urine with her boots covered in human feces, Fox reports.

Bank officials have since told investigators they wondered if Caryl was still alive when David escorted her into the bank hours earlier while she was "not moving" and her feet dangled from her wheelchair.

A neighbor told police he saw the Vanzos leaving in a taxi together earlier that day and couldn't tell if the woman "was unconscious, or not alive."

"My mother and I had an agreement," David said, denying all wrongdoing. "I took care of my mom for years. I'm the good guy here, not the bad guy. My mother, she wouldn't eat in the end."

Still, this isn't the first time David has faced allegations. Huffington Post reports he was previously investigated after making withdraws of $47,500 and $25,600 from his mother's account. Also, Caryl was previously unable to explain how or why a reverse mortgage for $118,000 was taken out in her name.

Authorities reveal the Hennepin County Adult Protection Services officials paid a visit to the Vanzos home in 2012 and found authorities found Caryl "lucid and able-bodied." At the time, Caryl said she wanted to stay with her son.

"If it was such a big deal, why didn't they take her out of here?" David said. "I love my mother very much. I gave my life to keep my mother alive."