Aygün was kidnapped by PKK militants around 19:00 hours local time on 12 August 2012 as he was returning from a visit in Ovacık, Tunceli accompanied with a newspaper reporter and his aide.
Militantes do PKK secuestrárono arredor das 19:00, hora local, o 12 de agosto de 2012, cando volvía de visitar a localidade de Ovacik (Tunceli) acompañado dun reporteiro dun xornal e do seu asesor.