The Latam Airlines plane collided with the truck just before 15:30 (20:30 GMT) on Friday at Jorge Chávez International Airport in the capital, Lima.

Video posted on social media shows the plane careering down the runway, catching fire and smoking as it ground to a halt.

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No passengers or flight crew were killed, the airline said on Twitter.

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A 31-year-old firefighter is in a critical condition, according to an executive director of the hospital agency EsSalud.

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Peru's Health Ministry added that 20 passengers are being treated for injuries - two of them are believed to be serious.

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It remains unclear why the fire truck entered the runway while the plane was taking off, bound for the southern Peruvian city of Juliaca.

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During a news conference, Latam CEO Manuel Van Oordt said the flight had been cleared for take-off.

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"We don't know why [the fire truck] was there," he said. "We didn't ask for their services."

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