HANOI, Vietnam (AP) — Police in Vietnam rescued more than 400 cats in a major bust of a cat meat crime ring last week in Ho Chi Minh City, and at least 40 of them have been reunited with their owners.

However, following the dayslong police operation, several of the cats died because of the harsh conditions they were found in, animal welfare groups said. They didn't elaborate or provide an exact number on the cats who didn't make it.

Since the operation, veterinarians and volunteers have flocked to care for the cats at a temporary rescue center set up at a facility run by the Ho Chi Minh City Criminal Police Division.

“People who lost their cats can come to the police station to identify their pets and help the police with the investigation,” police official Nguyên Thê Bâo told local media.

This operation is “a sobering reminder of the enormous scale of Viet Nam’s cat meat trade,” according to Karanvir Kukreja, who leads a campaign against dog and cat meat consumption for the international nonprofit Humane World for Animals.

Local media also reported that the Ho Chi Minh City police investigation into a spate of pet thefts resulted in the arrest of nine people

During the operation, police raided a yard and uncovered 45 cages containing around 400 live cats and four ice-filled foam containers holding approximately 80 dead cats. About 20 live cats were also recovered at a separate location, according to police, who said a kilogram of cat meat sold for around 70,000 Vietnamese dong (around $2.70).

The operation, with a total of more than 500 cats seized, was one of Vietnam's largest cat welfare cases in recent years, media reports also said.

The suspects admitted to trapping and collecting cats across south Vietnam over the past three years — in Ho Chi Minh City, the country's largest city, as well as in the cities of Tay Ninh and An Giang, police said.

“The sad truth about this trade is that thousands of cats every month are being stolen, trafficked and slaughtered for meat across the country,” said Phuong Pham, the country director of the Humane World for Animals in Vietnam. “Thankfully, these survivors escaped.”

Several of the rescued cats were pregnant, leading to kittens being born in police custody this week, she said.

Chris Gindelhumer with the nonprofit Vietnam Cat Welfare, who is helping care for the rescued animals, said he “saw quite a lot of tears in the last few days.”

“It’s really beautiful to see how many Vietnamese families are coming, looking for their cats,” he said. “But it’s also heartbreaking because many families were looking for their cats and didn’t find them.”

Many veterinarians and volunteers are working around the clock for the cats, Gindelhumer said.

Consumption of dog and cat meat is legal in Vietnam. Vendors must have permits to validate the animals' origins. But certain cities like Hoi An in central Vietnam are working with global animal welfare groups to stop dog and cat meat consumption in the city.

Not long after South Korea's 2024 ban on dog meat, Vietnamese officials said the government plans to rebuild parts of the legal system to better protect pets and the rights of their owners.

“This event surprised a lot of people and has raised awareness among many to stop consuming cat meat,” said An Pham, a master's degree student and avid cat lover in Ho Chi Minh City.