GREELEY – An off-duty Colorado state trooper plunged into an icy Greeley pond to rescue a 10-year-old boy who had fallen through the ice, and the trooper then had to be helped from the frigid water himself, authorities said.

Trooper Dan Haley and the boy he rescued, Brenndan Daviet, of Greeley, were treated for hypothermia at a hospital and released, the state patrol said.

Haley and his family had gone to the Greeley Family FunPlex on Saturday when Haley saw Brenndan plunge into the pond, said Trooper Heather Cobler, a spokeswoman for the patrol.

Haley ran toward Brenndan but fell through the ice himself. He reached the boy and lifted him on to thicker ice, but the water was so deep that Haley couldn’t touch bottom and he was unable to get out, Cobler said.

Haley managed to get close to the shore, where bystanders helped him out, Cobler said.

Brenndan’s parents didn’t immediately return a telephone message left with family members on Sunday.

Haley might have a public statement later, Cobler said.

Haley has been with the state patrol for three years and is assigned to the Homeland Security Section.

“We’re very proud of him,” Cobler said.