Calgary police say a teenager accused of sexually assaulting an eight-year-old girl is known to them.
The alleged incident happened Wednesday night in the neighbourhood of Silver Springs.
The girl was playing with a friend near 61st Avenue and Silver Mead Crescent N.W. when they were approached by a teenager on his bike.
The 16-year-old took the youngest child into the nearby bushes under the guise of playing a game, police said.
While in the bushes, police say the teen assaulted the girl before being interrupted by a neighbour.
He then jumped on his bike and rode away.
Based on tips from the public, the suspect was arrested by officers with the child abuse unit Monday.
"This person comes from a typical two-parent family," said Det. Jeff Klinger of the child abuse unit.
"The parents have been completely co-operative with us throughout this investigation [and] have been very supportive of our efforts not only to ensure that he doesn't reoffend but also to looking forward to getting this person placed in the proper ... home or facility."
The boy is charged with sexual assault, sexual interference, uttering threats and failing to comply with an undertaking.
Klinger said the accused did not know the two girls.
"What's important is that this person receives the supervision in the meantime to protect not only himself from going out and committing further offences, but also the community at large can be satisfied that this person isn't going to be in a position to reoffend anytime in the near future," said Klinger.