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As many as 100 people have been evacuated from the reserve of the Lheidli T’enneh First Nation north of Prince George after a pipeline explosion generated a massive fire that could be seen from the campus of the University of Northern B.C. (UNBC) on Tuesday.

Enbridge confirmed that a rupture happened on a line it owns and operates at about 5:45 p.m., about 13.5 kilometres north of Prince George, said a company statement.

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4:29 Pipeline explosion near Prince George forces about 100 evacuations Pipeline explosion near Prince George forces about 100 evacuations

The rupture happened at a site in a rural area and no injuries were reported.

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Emergency crews with the company responded, isolated and were working to depressurize two natural gas transmissions lines in the area so that the incident could be contained, the statement added.

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The Prince George RCMP confirmed that an explosion happened, forcing evacuations in the immediate vicinity of the fire.

In a news release, police said they responded to a call about an explosion close to Landooz Road at about 5:30 p.m.

Homes within several kilometres were evacuated, but the evacuation zone was later reduced to one kilometre.

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RCMP were on scene throughout the night and most of the impacted residents have since been allowed to return home.

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RCMP said the explosion “appeared to have” involved an Enbridge natural gas pipeline, and that there were no injuries nor any reported damage except to the pipeline itself.

The gas supply was shut down and there’s not yet any indication of what caused the blast.

The explosion has prompted a warning from FortisBC, saying it is anticipating a dip in energy flow and potential loss of service.

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The pipeline feeds the utility’s natural gas system, which has Fortis urging customers to turn off their thermostats and reduce use of their natural gas appliances.

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A similar warning has been issued in Washington state.

FortisBC estimates about 70 per cent of its one million customers have the potential to lose gas supply due to the incident.

Bryan Seymour took this video from the reserve of the Lheidli T’enneh First Nation, which is located nearby.

Seymour heard a “big explosion” around 6 p.m. that left his house shaking.

He initially thought it was an excavator, as development has been happening close to his home — but the noise “carried on longer than it should have.”

“My mother got up to look out the window, she saw a big cloud of smoke, a mushroom cloud of fire,” Seymour said. Tweet This

He said there are two reserves that straddle the Fraser River near Prince George, and the explosion happened on the north side, between the reserve and the Salmon Valley.

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Seymour went on to say a pipeline runs under the First Nation’s evacuation route, leaving residents “kind of shaken” that they had to drive over it.

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He noted, however, that there was a shutoff valve on the side of the road.

Social media lit up with photos and video of the fire, which appeared to be burning at a distance from the city, though it was still visible there.

Some say Shelley, some say Northwood. My friend @jpmartin70 just took this clip from @UNBC parking lot… flames 200+ feet in the air. pic.twitter.com/V0o8alFm7r — Glen Thielmann (@gthielmann) October 10, 2018

A video shot from the UNBC campus by JP Martin shows a fireball burning in the distance.

Martin, a schoolteacher in the Prince George school district, described it as a “massive, massive fireball.”

He said that he stood on the campus watching the fire for about 15 minutes and that the fireball stayed “very, very big, and every once in a while it would definitely expand.” Tweet This

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Martin said the winds were too strong to hear any possible explosions, but he said the strength of the fire didn’t dissipate while he was there.

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Prince George resident Marc Paulsen took the following photo at about 5:45 p.m.

@GlobalBC this is a view from my front window in Prince George. Apparently a gas line exploded north of the city. Do you have any info? pic.twitter.com/SpPNGOXoNH — Marc Paulsen (@marcusdabestus) October 10, 2018

Wendy Spraggs, another Prince George resident, described hear a “sonic boom” when the explosion happened.

“We looked across the river, and just beyond the trees there was a huge fireball going into the sky,” she said.

“We knew it was a pipeline because that was all it could be with that kind of noise.” Tweet This

Spraggs was first to call the incident into Spectra Energy, a company that does maintenance work on pipelines.

She later received a call back from Enbridge.

Spraggs said the fire only lasted temporarily — the sky was dark again by the time she spoke with Global News.

With files from CKPG, Jon Azpiri, and Sarah MacDonald