Serbian premier Aleksandar Vucic was forced to flee a Srebrenica memorial ceremony Saturday when an angry crowd threw stones at him at a 20th anniversary commemoration of the massacre, AFP journalists reported.

Vucic had just laid a flower at a monument for thousands of victims identified and buried there when the crowd started to chant 'Allahu Akbar' (God is Great) and hurled stones, forcing the prime minister to run for cover shielded by his bodyguards.