Video: Firefighters Battle Blaze At Commercial Building In Northridge

A massive fire burning in an alley in Northridge, Los Angeles, spread to a commercial structure Thursday night, causing heavy damage.

The fire broke out just before 10 p.m. local time (1 a.m. EDT) on the 19400 block of West Parthenia Street.

Los Angeles Fire Department said the fire spread to the one-story building after sparking on pallets stacked in a nearby alley. Smoke was billowing through the commercial building when they reached the spot, sending tall flames into the sky. Firefighters are now on the roof trying to extinguish the fire, the department said.

ABC 7 reported that two employees were present inside the building when it caught fire and they were safely brought out. No injuries have been reported so far.

Amy Bastman with the Los Angeles Fire Department said the firefighters were using a fire attack with vertical ventilation to prevent the fire from spreading to nearby buildings. The cause of the fire is being investigated.

“Northridge business with fully involved fire is Adwest a flyer mailing company. Probably lots of paper products inside,” Kevin Takumi, a Fox News reporter tweeted.

“The sound of helicopters hovering make me nervous and there is one overhead. Just saw on TV there’s a big building fire here in Northridge, only a few blocks from my house in a commercial building,” Christine Valada, a resident tweeted.

"The streets are super loud tonight. Something is popping off in Northridge tonight. Healing energy to what ever that noise is," Samantha, a resident, tweeted.

Reports state that three businesses inside the building, including a furniture warehouse and printing business, were destroyed in the fire.

In another similar incident in May, a fire spread from a guesthouse to a larger home and a commercial building nearby in Arizona. The guesthouse was completely destroyed, however, no injuries were reported, Phoenix Fire Capt. Larry Subervi said at the time, adding that it took longer than usual for the firefighters to reach and extinguish the fire because of the large amounts of debris surrounding the guesthouse.

This is a developing story.