PLUMMER, Idaho -

Two small children, ages five and nine, drowned Sunday evening in a fishing pond outside of Plummer, Idaho.

The pond is located off Old Agency Loop Road several miles southwest of Plummer. There's an aerator in the middle of the small fishing pond that is constantly running, even during winter, to keep it from completely freezing over, but it creates a dangerous situation as the ice closer to the bank is much thicker and stronger but is thinner a few feet out from the bank.

Brother and sister Jose Reyes and Elena Maravilla, descendants of the Coeur d'Alene Tribe, were walking their dog along Agency Road. Their grandmother and legal guardian, Rose Gonzalez, realized they had been out too long and drove a few hundred yards from her home. She soon realized her grandchildren were in the pond and did everything she could to save them, jumping in herself to try and rescue them.

Coeur d'Alene Tribal Police and emergency responders were dispatched to the pond after the grandmother called them. Gonzalez and the two children were taken to Kootenai Medical Center. Jose and Elena did not survive. Gonzalez was treated and released.

An early report suggests the children may have been looking for their dog when they fell through the ice. The Kootenai County Coroner’s office is expected to perform autopsies later Monday or Tuesday.