State Police have confirmed that 3-year-old Zyvette Marquez-Rivera has died.
Marquez-Rivera was last seen at Casey Park on Knickerbocker Rd. in the town of Ontario Sunday night.
Water rescue units located her body in a small body of water in the park at around just before midnight.
Police are continuing their investigation this morning.
This is a developing story. Be sure to stay with News 4 for the latest developments.