The zoo announced on its website that it was expecting “extremely large crowds” because of the great weather and a special promotion where members receive hippo bath mats.
Cincinnati police Sgt. Eric Franz said investigators have several descriptions of the suspects, but they still are working on getting a solid description.
"Right now, there are too many ... They are interviewing all the witnesses," Franz told WCPO. "It's going to take a brief period to get a good, accurate description."
The investigation is ongoing, Franz said.
The stabbing victim has serious injuries but they are not life-threatening, Franz said.
The zoo will not close, and there is no danger to the public, Franz told the TV station.
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