(Lancaster, PA) -- Two people are being treated at a Pennsylvania hospital after falling into a vat of chocolate at an M&M Mars plant. Initial reports didn't indicate how the two fell into the chocolate tank but it became clear they were unable to get themselves out. Firefighters were called in and had to cut a hole in the side of the vat to remove them. The victims were rescued this afternoon and taken to the hospital for medical evaluation, one of them by helicopter. There's no word yet on either of their conditions but an investigation is ongoing.