Two young children from Chubbuck and Blackfoot were killed in unrelated incidents on Saturday. 

Chubbuck resident Ella Marie Tucker, 3, died after she reportedly shot herself with a handgun at a campground in Yellowstone National Park. Blackfoot resident Connor Covington, 4, also died after he was struck by a sport utility vehicle near the football field at Snake River High School in Bingham County. 

Yellowstone National Park rangers responded Saturday morning to Grant Village Campground, after a woman reported her daughter shot herself. Resuscitation efforts failed, resulting in what officials said was the first shooting death in the park since 1978.

Park spokesman Al Nash said Sunday that part of the campground remained cordoned off while park rangers and special park agents conduct the investigation. 

"We don't have all of the information, and we haven't drawn any conclusions," Nash said.

A federal law went into effect Feb. 22, 2010, allowing visitors to possess firearms in the park. 

"Given the 3 million visitors we see here every year, there thankfully are very few fatalities reported in the park," Nash said, adding that heart attacks are the primary cause of human deaths in the park.

Portions of the park are within the borders of Wyoming, Idaho and Montana, with the girl's death occurring in Wyoming. Nash said park authorities have exclusive federal jurisdiction because the park predates the formation of those states, but works with surrounding law enforcement agencies. That means park rangers and special park agents are leading the investigation, he said.

The incident in Bingham County occurred when Blackfoot resident Connor Covington ran into the path of a sport utility vehicle around 5 p.m.; the SUV was leaving the field where a youth football game was being played, said Bingham County Sheriff Craig Rowland.  

Through an investigation, deputies determined that Melissa Polatis was driving a 2010 Chevrolet Tahoe when the tire of the vehicle ran over the young boy. Covington was given CPR by witnesses at the scene until first responders arrived and took over. He was eventually pronounced dead after all life saving procedures failed. 

Rowland said the investigation continues, but he believes it was a tragic accident. The driver was not issued a citation.

Including Tucker and Covington’s deaths, there have been three child deaths connected to East Idaho in recent weeks. 

A 2-year-old boy also died last month after he was struck by a vehicle that was pulling a trailer in the 700 block of Redman Street in Chubbuck.

Chubbuck Police Department officials previously indicated that a family member thought the child was inside the home when an SUV pulling a camp trailer was being moved. The boy, whose name wasn’t released, was run over by the wheels of the camp trailer.