Nigeria wraps up presidential election campaign

Abuja - Campaigning wound to a close in Nigeria's presidential elections on Thursday, with the two leading candidates delivering their final messages to supporters before the crunch vote.

Land and sea borders were shut at midnight on Wednesday (23:00 GMT) as part of stringent security measures that also include an eight-hour restriction on movement when polling stations are open.

Nigeria has a history of election-related unrest and both candidates appeared keen to prevent a repeat of 2011, when 1 000 people were killed in clashes after the results were announced.