The first assault happened on the evening of May 13 when two girls reported being assaulted by several youths in Pleasant Hill Park, Saskatoon police said in a release.
The second assault happened a week later on May 20 when a woman said she was assaulted by a number of youth, police said.
Police said a 13-year-old girl is now charged with assault in both incidents. Her name cannot be released under provisions of the Youth Criminal Justice Act.
She appeared Friday morning in Saskatoon provincial court and was released to the care of her parents.
The girl was also released on the condition she not attend St. Marys School or have contact with any of the victims, or anyone who appeared in the video.
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A number of other youth were identified but cannot be charged as they are under the age of 12, police said.
"But it wasn't until recently that their behaviour actually turned or met the threshold for criminal behaviour, or criminal in nature I should say," said Fraser.
The two playground assaults, along with several other incidents, continue to be investigated by Saskatoon police.
She said police are only one part of the response to violence in that area, adding that it is a community effort involving health services and local schools.
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Bonnie Halcrow, who lives in Flin Flon, Man., but was visiting Saskatoon, told CBC News she had bruises to her back, arms and legs after she was assaulted.
A 13-year-old-girl has been charged with assault in connection to two incidents in Pleasant Hill Park area in Saskatoon, Sask., one of which was captured on video.
Saskatoon police released a statement detailing the two incidents – the first on the evening of May 13, when a 10-year-old girl and a 14-year-old girl reported being assaulted by a group of young people.
The second alleged assault occurred on May 20, when Bonnie Halcrow, 33, was swarmed by a group of at least four people, in an incident that was captured on video by a bystander.
The teen has been charged with two counts of assault and appeared in a Saskatoon courtroom Friday morning; she has since been released from custody.
Police said the other youths were identified in the video but wont face charges because they are under 12 years old.
Saskatoon police are investigating a disturbing video that appears to show a group of young boys swarm and repeatedly attack a woman at a park playground.