A University of Florida professor who was arrested for allegedly filming secret upskirt videos of his students claimed he was merely trying to prove they weren't wearing underwear.

Don Samuelson, of UF's College of Veterinary Medicine, was placed on administrative leave earlier this month after a USB camera pen found in his office was tied to at least four incidents involving the filming of female student's body parts through their clothes.

The 65-year-old's creepshot sessions were discovered in late August after he reportedly attempted to stick his hidden camera between a female student's thighs.

The student recognized the pen's ulterior function and reported Samuelson to school officials.

Samuelson was arrested last Friday and charged with multiple counts of video voyeurism.

According to University Police, Samuelson confessed to filming the students, but claimed he was doing so in order to prove the student "wasn’t wearing undergarments."

The investigation is ongoing, but a UF spokeswoman said the university is likely to terminate Samuelson's employment.

[screengrab via FirstCoastNews]