An Alberta girl is in hospital after a piece of her clothing became stuck on playground equipment, leaving her unconscious.

Police said the girl’s scarf somehow got caught on the monkey bars in the school playground, CTV Calgary reported.

Emergency crews performed CPR on the Grade 1 student when they arrived to O.S. Geiger School shortly before 1 p.m. on Monday.

She was rushed to Alberta Children's Hospital where she was listed as being in critical condition as of Monday evening.

The Calgary Board of Education said it will conduct a review of the incident.

"The CBE has a crisis team that is available to support the students and staff at the school, if they feel it is necessary," the board said in a statement.

The school board told CTV Calgary that it could not confirm whether the student was being supervised by a teacher at the time of the accident.

With a report from CTV Calgary