- Gorilla was shot after a 3-year-old fell into its enclosure at the zoo
- Some critics had called for criminal charges against the boy's mother
- The boy's family said it was very pleased with the decision
A 17-year-old endangered western lowland silverback gorilla named Harambe was shot by zoo staff in the minutes after the boy fell on May 28, and the killing triggered intense criticism of the zoo and the boy's mother.
Some critics had called for criminal charges against the mother, who was with the boy at the zoo, for reckless endangerment.
"I am very sorry about the loss of this gorilla but nothing about this situation rises to the level of a criminal charge," Hamilton County prosecutor Joseph Deters said in a statement.
"Had she been in the bathroom smoking crack and let her kids run around the zoo that'll be a different story. She was attending to her children by all witness accounts and the 3-year-old just scampered off," he told reporters on Monday.
The family said it was very pleased with the decision.