Mortar shells fired by Islamic State (IS) militants injured a Turkish soldier while patrolling in southeastern Turkey on Tuesday morning, Dogan News reported. The shells hit Oguzeli district in the southeastern Turkish province of Gaziantep, according to the report. A military source told Dogan that the health condition of the injured soldier is good. Meanwhile, Kilis Governor's office said on Tuesday that four IS suspects were arrested near Elbeyli town near Turkish-Syrian border. The four suspects are now under investigation, a statement on the website of office added.