A bomb <a href="https://en.wikipedia.org/wiki/2015_Sabiha_Gökçen_Airport_bombing" id="mwAT4" rel="mw:WikiLink" title="2015 Sabiha Gökçen Airport bombing">explodes</a> at Istanbul's <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Sabiha_Gökçen_Airport" id="mwAT8" rel="mw:WikiLink" title="Sabiha Gökçen Airport">Sabiha Gökçen Airport</a>, killing one airport cleaner. The <a href="https://en.wikipedia.org/wiki/Kurdistan_Freedom_Hawks" id="mwAUA" rel="mw:WikiLink" title="Kurdistan Freedom Hawks">Kurdistan Freedom Hawks</a> claim responsibility for the attack four days later.