The Philadelphia Flyers say they found NO evidence to prove team mascot Gritty assaulted a 13-year-old boy in Nov. ... but now cops are investigating.
The Philadelphia Police Dept. has confirmed they're looking into a claim that the person inside the official Gritty costume punched a kid in the back at Wells Fargo Arena (where the Flyers play) during a Nov. 19, 2019 photo shoot fan event.
Chris Greenwell -- the father of the alleged victim -- told the Philadelphia Inquirer his son had "playfully patted" Gritty on the head after taking a picture .