Turkish Prime Minister Recep Tayyip Erdogan warned Saturday police would clamp down on anyone defying a ban on demonstrations at Istanbul’s Taksim Square on the anniversary of a wave of mass protests last year.

Turkish Prime Minister Recep Tayyip Erdogan warned Saturday police would clamp down on anyone defying a ban on demonstrations at Istanbul's Taksim Square on the anniversary of a wave of mass protests last year.

"If you go there, our security forces have received clear-cut instructions and will do whatever is necessary from A to Z," Erdogan told thousands of supporters at an Istanbul rally.

"You will not be able to take to (Taksim) like you did last year because you are obliged to abide by the laws... If you do not, the state will do whatever is necessary for its security."