(CNN) — The mother called 911 to say her 5-year-old boy shot his baby brother with a paintball gun.
But it wasn’t a paintball gun. It was a .22-caliber Magnum revolver. And the 9-month-old boy didn’t survive.
Missouri authorities are trying to figure out what led up to the shooting Monday in Elmo, in the northwest corner of Missouri.
“At this point foul play is not suspected, and it appears at this time that the shooting was accidental,” the Nodaway County Sheriff’s Office said.
Sheriff Darren White told CNN affiliate KCTV that the baby was in a playpen when his brother found the gun lying on a bed. Authorities say the gun belongs to a relative, but not the mother.
The sheriff said guns are rampant in the rural community.
“We are big supporters of firearms around here,” White told CNN affiliate KETV. “We have a lot of people that own weapons. They hunt. They target shoot. … Most people are very safe with them, and this is one of those cases where everything went together in the wrong way.”
Authorities have not determined whether charges will be filed against any adult in the case.