(TMZ) - Justin Bieber is under investigation for assault in his native Canada after allegedly striking a woman while playing with a toy gun.

According to TMZ, a formal complaint was filed against Bieber in November by a female security guard who was working at the Scotiabank Place in Ottawa. Bieber was using a toy Nerf dart gun to play-fight backstage with his younger brother and sister. One of the toy darts allegedly struck the security guard.

The woman, whose identity has not been revealed, was so incensed by the incident that she went straight to police. Officials are currently looking into the bizarre case.