A massive fire has erupted near a NATO base within the Buca district, Izmir, western Turkey. Authorities are investigating a possible act of sabotage, local media reports.

The inferno started on Sunday evening on the border of the Sahintepe and Mevkiinde districts. The fire engulfed the grassy wooded area and is spreading closer to NATO’s military base because of strong winds.

According to a Turkish news channel, the fire is threatening a number of populated areas, and has already impacted a home for the elderly and its adjacent garden.

Despite intense efforts by NATO-stationed troops to stop the fire, the rapidly-spreading flames are moving closer to the arsenal, Turkish media reports. The channel also reports that possible “sabotage” is suspected.

The fire is threatening the Allied Land Command (LANDCOM) base at Şirinyer (Buca) in İzmir, Turkey. LANDCOM is charged with improving the effectiveness and reaction time of the alliance’s land forces that when needed could respond to an international crisis.

Under the NATO nuclear weapons sharing program, Washington maintains its largest overseas nuclear arsenal in Turkey, consisting of up to 50 nuclear weapons, according to some estimates. The nukes, however, are stored at the base at Incirlik, and none are reportedly stored in Izmir.