Intra-procedural aneurysm rupture (IPAR) is one of the most feared complications in the endovascular treatment of intracranial aneurysms. Most IPAR cases occur during microwire or microcatheter advancement or coil placement into the aneurysm . Flow diverter stent (FDS) treatment may also result in early or late post-procedural aneurysm rupture. Although the definite cause is not known, changes in intra-aneurysmal hemodynamics after the stent are held responsible for the rupture . We present a case where IPAR developed during FDS treatment and hemostasis was achieved with stent-in-stent combination.