A six-year-old girl was killed after her brother, aged four, accidentally shot her in the head.
Little Millie Drew died in hospital several days after the tragedy at the family home in Georgia, USA.
The siblings were in a car in their driveway last week when the vehicle wouldn't start.
The children's mum got out to try to work out what was wrong and her son picked up a gun that was in the vehicle, police say.
He accidentally fired it, sending a bullet into his sister's head, according to officers.
The youngster was rushed to hospital but died from her injuries two days later.
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Police Sergeant Ashley Henson said, according to CNN : "It's just a really sad situation.
"Just based on all the evidence and the entire situation, we felt like charges were not warranted in this particular case."
Sheriff Gary Gulledge said in a statement: "We want to remind everyone to keep their firearms unloaded and secured in an area away from children to ensure that this never happens again."
A GoFundMe page set up before her death said: "Millie Drew Kelly sustained a gun shot wound to the right side of her head after an accidental discharge.
"Her injuries are very critical and is in a need of a miracle. God is in control and has the final say!
"This fund has been established so that all have a way to bless this precious family when they need it most.
"Please continue to lift this family up in prayer. Your generosity is greatly appreciated."
