07/25/2016 06:50 EDT | Updated 07/25/2016 06:59 EDT

Calgary Boy Who Fell Into Yoho River Is Now Missing Persons Case: Parks Canada

FIELD, B.C. — Parks Canada says it is scaling back the recovery operation for an 11-year-old Calgary boy who fell into the Yoho River in southeastern B.C.

Two boys fell into the river near the Takkakaw Falls Friday evening while visiting Yoho National Park with their family.

Parks Canada spokeswoman Tannia Peters said one of the boys was quickly rescued, but the other was swept downstream.

An extensive aerial and ground search involving local police and emergency agencies, two helicopters and a Parks Canada dog handler continued through the weekend, without success.

Parks Canada says it will continue to monitor the area as water levels change in hopes of finding the boy.

However, it says the incident is now being handled by the Golden-Field RCMP as a missing persons case.

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