New York (CNN) -- Police will investigate the deaths of nearly 100 animals that were found in a Petco store after flooding in upstate New York, Johnson City Mayor Dennis Hannon said Monday. Employees at the Oakdale Plaza store checked on the premises late Wednesday and "all was still well," Petco chief executive Jim Myers wrote Sunday on the chain's official blog, PetcoScoop. "When the team members checked again early Thursday morning, the store was flooded with four feet of water and we were unable to enter," wrote Myers. A river flood warning was issued Wednesday afternoon for the entire Johnson City area, along with flash flood warnings that continued well into Thursday, according to Joanne Labounty, a spokeswoman for the National Weather Service.
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Flooding hit upstate New York last week
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Nearly 100 animals were found dead after a Petco store flooded
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Petco apologizes to the community after residents express outrage
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The chain has launched an internal investigation
"We apologize to the members of the @placeholder community and look forward to serving you better in the future," Myers wrote.