photo: Change.org

Cincinnati police have officially begun investigating the parents of the 3-year-old boy who fell into a gorilla exhibit at the Cincinnati Zoo May 28, ultimately resulting in the silverback's death

The Cincinnati PD will look into "the actions of the parents/family that led up to the incident," according to TMZ

"After the review, we will determine if charges need to be brought forward," police spokeswoman Tiffaney Hardy told CNN. "If it is determined charges need to be brought forward, we would then discuss it with the Hamilton County prosecutor's office."

This news comes after zoo officials sparked national outrage by fatally shooting Harambe, the 450-pound gorilla. The boy allegedly slipped under the fenced enclosure when his mother, Michelle Gregg, tended to the other children she had in her care. The child's father, Deonne Dickerson, was not at the zoo. 

A "Justice for Harambe" Change petition has already amassed over 151,000 signatures. 

"No one wants to see any harm come to a human visiting the zoo, but this entire tragedy could have been avoided, had this little boy been properly supervised," the petition reads. "It is completely negligent for any man, woman or child to enter an exhibit or restricted area at a zoo, sanctuary or wild animal park."

On social media, many are debating whether the parents are at fault and if they should be charged with negligence. Some Facebook users are even saying that the child's mother should've died instead of Harambe.

However, some people, like Huffington Post blogger Andi Curry, understand that parenting is hard, and people make mistakes. 

"She didn't intentionally drop her child into the enclosure. She lost sight of her toddler and a terrible chain of events ensued," she wrote. "It's a screw-up, sure, but it's a screw-up to which most moms can relate. A screw-up that certainly doesn't merit the public shaming and ridicule she's subsequently endured."

The police didn't specify how long the investigation will take.