What caused the deadly explosion at a school in Turkey?

At least one man was killed today by…
two shells of unknown so far origin that fell near a school in the city Κίλις, in the eponymous frontier province of southeast Turkey, near the syrian border, they broadcast Turkish media.
Three people at least, students of the school, were injured by the fire, he spread the news network, NTV.
According to the mayor of Κίλις Hasan Kara the fire that came “likely” from neighboring Syria. The authorities are investigating if the shells were cast out from Syria, said an official who asked not to be named.
Turkish television networks were broadcasting the morning images with ambulances that carried the wounded to the hospital in the city.
According to Turkish media, the newspaper Haberturk, these shells are cast from Syria and caused the death of two people. The information has not been confirmed so far from the official source.
Shells ejected from the war torn Syria have fallen repeatedly in the border regions of Turkey after the start of the conflict in April 2011, causing casualties. In accordance with the rules εμπλοκλής, the Turkish army responds systematically with die fire of artillery against the positions from where it launched the fire.
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