Ureteric fistula into the arterial tree is a well-recognised, but uncommon condition. The involvement of internal iliac artery is rare. We present a rare case of fistulous communication and subsequent infection of an internal iliac artery aneurysm and ureter secondary to insertion of ureteric stent following endovascular exclusion of the aneurysm and its management. Nephrostogram identified the fistula not seen on computerised tomography. This case highlights the awareness of such pathology allowing for prompt recognition of the condition and importance of appropriate imaging.