PARADISE, Calif. (AP) — Authorities moved to set up a rapid DNA-analysis system and bring in cadaver dogs, mobile morgues and more search teams in an intensified effort to find and identify victims of the deadliest wildfire in California history, an inferno that killed at least 42 people.

Five days after flames all but obliterated the Northern California town of Paradise, population 27,000, officials were unsure of the exact number of missing. But the death toll was all but certain to rise.

“I want to recover as many remains as we possibly can, as soon as we can. Because I know the toll it takes on loved ones,” Butte County Sheriff Kory Honea said Monday night as he announced the discovery of 13 more dead.

More than a dozen coroner search-and-recovery teams looked for bodies across the apocalyptic landscape that was once Paradise, while anxious relatives visited shelters and called police and hospitals in hopes of finding loved ones.

Lisa Jordan drove 600 miles (1,000 kilometers) from Yakima, Washington, to search for her uncle, Nick Clark, and his wife, Anne, who lived in Paradise. Anne Clark has multiple sclerosis and cannot walk. Jordan said no one seemed to know whether they were able to get out or whether their house was still standing.

“I’m staying hopeful,” she said. “Until the final word comes, you keep fighting against it.”

Authorities said they were bringing in two mobile morgue units from the military, requesting an additional 150 search-and-rescue personnel, and seeking the setup of a rapid DNA system to speed the analysis of remains.

The flames were so fierce that they melted metal. In some cases, search crews found only bones or bone fragments, which were duly put in body bags. Investigators are consulting forensic anthropologists for help in identifying the remains.

Chaplains accompanied some coroner search teams that visited dozens of addresses belonging to people reported missing. No cars in the driveway was a considered a good sign, one car a little more ominous and multiple burned-out vehicles more reason for worry.

Meanwhile, state investigators trying to establish the cause of the inferno appeared to be zeroing in on Pacific Gas & Electric Co. power lines.

A landowner near where the blaze began, Betsy Ann Cowley, said PG&E notified her the day before the blaze that crews needed to come onto her property because the utility’s wires were sparking. Investigators have since declared the area a crime scene.