A dog that went missing in Jersey City has died, according to its owner.

News 12 New Jersey first reported about Mac the Goldendoodle who went missing after owner Diego Chaves left him with a dog sitter he knew as “Alyssa.”

But after two days, Chaves says that he did not hear from “Alyssa” or his beloved pet.

He then came to find out that “Alyssa” may not have been who she claimed to be, and was using various alias online and possibly false references.

Then Chaves says that the unthinkable got even worse.

“We received a phone call that Mac has been brought into the vet. After rushing down to the vet, we were informed that Mac had unfortunately passed away,” Chaves wrote on social media.

It was not immediately clear what led to the death.

“Please do not take this as a sign to harass or threaten the sitter. For now, we just ask for time to mourn the loss of our Mac,” Chaves wrote.

The Jersey City Police Department is investigating.