I’m betting this is simply another “false flag” incident engineered by Turkey’s Islamist government to gin up public and international acceptance of Turkey’s escalating war on the Kurds.
Seems like it would be a poor strategical choice for the Kurds.
They are already fighting ISIS on one front so it is not a great idea to open another front against the Turk.
But on the other hand Turkey has been not allowing the US to supply the Kurds weapons in their fight against ISIS.
It is hard to say what may be the truth here.
But as far as a false flag op by the Turkish government; I doubt it. I don't think the current Turkish government cares enough about public opinion to bother risking such a move to sway public opinion in that way.
If they wanted to make a major move against the Kurds they would just do it and deal with public opinion afterword if necessary.