Delta Airlines is investigating the death of a dog during a layover at Detroit Metropolitan Airport, and the pet’s family want answers.

The dog, an 8-year-old Pomeranian named Alejandro, was reportedly found dead inside of its carrier at a cargo facility in Romulus, southwest of Detroit.

Alejandro was headed to New Jersey from Phoenix, and had a layover in Detroit.

“When he landed here in Michigan, he was alive at 6:30 a.m., and then at 8:20, he wasn’t moving and it just doesn’t make any sense to me,” owner Michael Dellagrazie told WDIV. “We lost a family member. That’s exactly what happened, and somebody has to be responsible for it. He was in their care and they didn’t take care of him.”

Delta told WXYZ that a flight attendant had checked on the dog at about 6 a.m., and when the attendant returned about two hours later, the dog had died.

Delta said they will conduct “a thorough review” of the incident and provided the following statement to ABC News: “We know pets are an important member of the family and we are focused on the well-being of all animals we transport. Delta is conducting a thorough review of the situation and has been working directly with Alejandro’s family to support them however we can. As part of that review, we want to find out more about why this may have occurred to ensure it doesn’t happen again and we have offered to have Alejandro evaluated by a veterinarian to learn more.”

The Dellagrazie’s are being represented by the same attorney, Evan Oshan, who represented the family of a French bulldog puppy that died via a United Airlines flight when an attendant reportedly demanded the dog be kept in its carrier and stowed in an overhead bin.

“I think this stretches beyond just pets,” Oshan told WXYZ. “I think this is the way that airlines, commercial airlines in general, treat people. They are treating people horribly.”

Oshan told the station that Alejandro’s family is “completely devastated.”