Turkey's Erdogan congratulates opposition candidate for Istanbul win

ISTANBUL, June 23 (Reuters) - Turkish President Tayyip Erdogan congratulated opposition candidate Ekrem Imamoglu on Sunday for winning Istanbul's re-run mayoral election according to unofficial results.

The High Electoral Board is yet to announce the formal results but Imamoglu is set for a comfortable victory over his rival Binali Yildirim, from the ruling AKP, with 54 percent of votes after more than 99 percent of the ballot boxes opened.

(Reporting by Humeyra Pamuk; Editing by Dominic Evans)