(CNN) — Firefighters made progress in their battle against a massive fire that shut down Nairobi's Kenyatta International Airport on Tuesday, the Kenyan government said.
"Fire has been contained in the Departures area," the interior ministry said via Twitter. "Still burning in the Arrivals terminal."
The blaze had engulfed the entire international terminal, Ken Mijungu of CNN affiliate NTV reported.
No casualties were reported from the fire, which sent a huge plume of thick black smoke into the sky.
The airport is closed indefinitely, the Kenyan Interior Ministry tweeted. The ministry also said fire engines were running dangerously low on water.
No flights are departing or arriving. Flights are being diverted to other airports.
Mijungu said parts of the duty-free area had been demolished for construction last week, but the cause of the blaze was not known.
Nothing has been ruled out, Kenyan government spokesman Muthui Kariuki said.
Josef Ole Lenku, Kenya's Cabinet secretary for interior and security, told reporters that security is being boosted at the airport.