Ottawa police have charged a 13-year-old girl accused of kicking an officer in the stomach during Glowfair on Saturday, the second incident involving a teenager and police at the weekend festival.

Police say the alleged attack occurred around 10:30 p.m. Saturday near the corner of Bank and Waverley streets, and confirm pepper spray was used.

The girl has been charged with assaulting a peace officer and resisting arrest.

That incident followed another on Friday night when police say a boy tried to grab an officer's baton as police attempted to control the crowd. Pepper spray was deployed in that incident as well.

A 17-year-old boy is facing charges of attempting to disarm a peace officer and causing a disturbance.

Warning: some viewers may find the video of the arrest disturbing.

Ottawa police arrest a 17-year-old during the annual Glowfair Festival. Warning: some people may find this video disturbing. 0:41

Both of the accused are from Ottawa, police said Tuesday.

Police said those are the only two investigations stemming from the two-day art and music festival, organized by the Bank Street Business Improvement Area.

Organizers have said it's getting more expensive to provide security for the annual free event.