Turkish newspapers carried front-page pictures on Monday of three more men believed to be planning suicide bomb attacks for ISIL.

Turkish newspapers carried front-page pictures on Monday of three more men believed to be planning suicide bomb attacks for ISIL.

Sunday's attack on Istiklal Street, a long pedestrian avenue lined with international stores and foreign consulates, was the fourth suicide bombing in Turkey this year. Two in Istanbul have been blamed on ISIL, while the two others in the capital Ankara have been claimed by Kurdish militants.

At least half a dozen newspapers from across the political spectrum carried head-and-shoulders pictures of three suspected ISIL members, saying they had been given instructions to carry out further attacks in crowded areas, primarily in Istanbul.

"All provincial police units have taken action to try to capture the three terrorists suspected of being [ISIL] members planning sensational attacks," the state-run Anadolu news agency said, citing unnamed security sources and describing them as part of an "active cell" in Turkey.