As firefighters doused still burning oil tanker cars, more bodies were recovered Sunday in this devastated town in eastern Quebec, raising the death toll to five after a runaway train derailed, igniting explosions and fires that destroyed the downtown district. With dozens of people reported missing, authorities feared they could find more bodies once they reached the hardest-hit areas.

Quebec provincial police Lt. Michel Brunet said Sunday that about 40 people have been reported missing, but cautioned that the number could fluctuate.

Brunet confirmed two more deaths early Sunday afternoon.

All but one of the 73 cars were filled with oil, which was being transported from North Dakota’s Bakken oil region to a refinery in Saint John, New Brunswick.

The eruptions early Saturday morning sent residents of Lac-Megantic scrambling through the streets under the intense heat of towering fireballs and a red glow that illuminated the night sky.

Local Fire Chief Denis Lauzon likened the charred scene to “a war zone.”

“This is really terrible. Our community is grieving and it is taking its toll on us,” Mayor Colette Roy-Laroche said.

Prime Minister Stephen Harper toured the town on Sunday to offer his condolences.

The search for victims in the charred debris was hampered because two tanker cars were still burning Sunday morning, sparking fears of more potentially fatal blasts.

Lauzon said firefighters are staying 500 feet from the burning tankers, which are being doused with water and foam to keep them from overheating.

“It’s a mess,” he said.

The multiple blasts came over a span of several hours in the town of 6,000, which is about 155 miles east of Montreal and about 10 miles (16 kilometers) west of the Maine border.

About 30 buildings were destroyed after tanker rail cars laden with oil caught fire and exploded in the picturesque lakeside town in Quebec’s Eastern Townships.

The derailment caused at least five tanker cars to explode in the downtown district, a popular area packed with bars that often bustles on summer weekend nights. Police said the first explosion tore through the town shortly after 1 a.m. local time. The fire then spread to several homes.

Brunet said he couldn’t say where the bodies were found exactly because the families have not been notified.

The cause of the accident was believed to be a runaway train, the railway’s operator said.

Edward Burkhardt, the president and CEO of Rail World Inc., the parent company of Montreal, Maine & Atlantic Railway, said the train had been parked uphill of Lac-Megantic because the engineer had finished his run. The tanker cars somehow came loose and sped downhill nearly seven miles into the town before derailing.

“We’ve had a very good safety record for these 10 years,” Burkhardt said of the decade-old railroad. “Well, I think we’ve blown it here.”

Joe McGonigle, Montreal, Maine & Atlantic’s vice president of marketing, said the company believes the brakes were the cause. He said the rail company has been in touch with Canada’s Transportation Safety Board.

“Somehow those brakes were released and that’s what is going to be investigated,” McGonigle said. “We’re pretty comfortable saying it is the brakes. The train was parked, it was tied up. The brakes were secured. Somehow it got loose.”

Lauzon, the fire chief, said that firefighters in a nearby community were called to a locomotive blaze on the same train a few hours before the derailment. Lauzon said he could not provide additional details about that fire since it was in another jurisdiction. Nantes Fire Chief Patrick Lambert couldn’t be immediately reached, but McGonigle confirmed the fire department showed up after the first engineer tied up and went to a local hotel and after someone reported a fire.