KONYA, Turkey 

An ultra-light aircraft crashed in central Turkey's Konya province Thursday that left at least three foreigners injured, hospital sources said. 

Portuguese Carlos Jorge, 56, German Ulrich Metternich, 56, and Italian Diego Ruggiero, 40, are in stable condition, the Selcuk University hospital told the media.

It was not immediately clear under what circumstances the ultra-light NG-4 aircraft went down.

The three foreigners were in Turkey to participate in the "NATO Tiger Meet 2015" flight drills event held at Konya's third Main Jet Base Command.