A woman was critically injured in Southeast Washington Sunday evening in a dog attack, authorities said. (iStock/iStock)

A woman was apparently killed by a dog in Southeast Washington on Sunday evening, authorities said.

A police spokeswoman said in an email Sunday that officers were investigating a fatal dog attack in the 1300 block of Dexter Terrace SE. The attack, which was reported about 6:30 p.m., apparently occurred indoors, authorities said.

At the location, police found 55-year-old Angela Smith of Southeast D.C., suffering from multiple trauma wounds to her body. She was taken to a nearby hospital, where she was pronounced dead.

Police said Monday that an autopsy will be performed to determine the exact cause of death.

The dog was removed from the property and humanely euthanized, said a spokesman for the Humane Rescue Alliance. The alliance is the District’s animal control contractor.

Police initially said the dog was a pit bull. Officials with the Humane Rescue Alliance later said it was a mixed-breed dog.

Smith’s husband — Rob Frazier — told WUSA (Channel 9) that the dog was named Kaine and had been the couple’s pet for eight years. He said the dog had been well-behaved.

Frazier said he went to run an errand and was gone about 15 minutes. He said he came back to their home and found his wife dead. They had been together for 20 years.

He told WUSA that Smith and the dog were “buddies” and he didn’t know why it would have attacked her.

“I’m thinking she might have taken some food or something like that from him, and he’s real aggressive like that, right? Maybe, just maybe, he reacted like that. That’s what I’m hoping,” Frazier said to WUSA.