Authorities in Utah say a husky attacked a 4-year-old boy, ripped off his arm and presumably swallowed the now-missing limb, according to reports.

The child, whose identity hasn’t been released, wanted to play with his neighbor’s two huskies Sunday afternoon in Layton and stuck his arm underneath a chain-link fence, news station KUTV reported.

The boy had a sock on his right arm when one of the dogs bit into his forearm and tore off the appendage about three inches above the wrist, officials said.

Emergency responders were able to locate the husky, but weren’t able to recover the boy’s arm or hand.

“We’ve not found it in the backyard,” Layton Fire Battalion Chief Jason Cook told KSL.com. “Our fear is that it may have been ingested by the dog.”

The boy was airlifted to Primary Children’s Hospital in serious, but stable condition, according to officials.

Animal control took both dogs into custody and authorities are investigating the incident.

“I think this is one of those innocent child play moments where the dogs have probably been in the backyard many, many times,” Cook told the site. “He’s seen them and maybe even done something similar with them before, but for whatever reason this one kind of took a tragic turn today,”