article_snippet.sent: A Shia fighter smiles as A Shia fighter celebrates with A Shia fighter comrades a day after victory in the month-long battle to retake the northern Iraqi city from Islamic State .
article_snippet.sent: Shia fighters from the Popular Mobilisation units and Iraqi security forces maintain security in Tikrit, on April 1 .
article_snippet.sent: Iraqi security forces secure a street in Tikrit earlier today. 
article_snippet.sent: Grand Ayatollah Ali al-Sistani, Iraq's top Shia cleric who is revered by millions, also called on security forces and allied paramilitaries to 'preserve and guard citizens' properties in areas that have been liberated.'