A bizarre discovery in a Corona motel room has homicide investigators trying to determine who killed a man and a dog and critically injured a woman.

“We’re still up in the air with what we’ve got,” police Lt. Alan Lorton said Friday evening, Aug. 7.

Until they do learn more, Lorton said, police are withholding details on what weapon was used and the nature of the injuries. The woman was found unconscious Friday morning and had not awakened as of Friday night, Lorton said. She was taken to Riverside Community Hospital before being transferred to Loma Linda University Medical Center.

The victims’ names have not been announced.

They were found about 10:20 a.m. in a ground-floor room at the two-story Best Western motel on Pomona Road near Lincoln Street and the 91 freeway.

Adriano Feijo, the hotel general manager, said he called police when the guests, who had registered to stay only one night, didn’t pay for their room and he couldn’t reach them by phone. Feijo said he handed police the key when they arrived, and police opened the door and discovered the couple.

Police said in a news release that an employee actually discovered the couple and the dog and called police.

The motel remained open despite the presence of crime-scene tape that blocked off part of the parking lot, and cleaning staff went about their business as usual.

Investigators did not search the room until about 3:45 p.m., when they obtained a search warrant.

Police do not intend to release more information until Monday.