Federal authorities are confirming that a cyanide trap intended to kill coyotes in eastern Idaho instead killed a dog in an incident the local sheriff also says injured a 14-year-old boy.

The U.S. Department of Agriculture in a statement Friday confirms that workers placed the device that activated Thursday and resulted in the death of a 3-year-old Lab named Casey.

Bannock County Sheriff Lorin Nielsen says the boy was taken to a hospital to be tested for cyanide poisoning but was not seriously injured and was released.

The federal agency says it has removed from the area other cyanide devices called M-44s that are spring-activated and shoot poison into an animal's mouth.

Capt. Dan Argyle said the device that activated was about 500 yards from the boy's home near Pocatello.

The Bannock County Sheriff's Office is investigating an incident involving a predator control device that detonated killing a family's dog.