Voting in some areas of Nigeria has been officially delayed until Sunday because of technical problems, Nigeria's Independent National Electoral Commission said Saturday. In areas of the country where there were no problems, voting in the country's presidential election continued as scheduled. The postponement affected polling units where card readers failed to work and in other areas where ballot paper was late arriving, the commission said.[Previous story, posted at 1:11 p.m. ET]A Boko Haram attack, equipment failures and the hacking of an election website Saturday marred presidential voting in Nigeria, forcing voting to be extended into Sunday in some areas.In a northwestern village, Boko Haram extremists allegedly killed three people in an unsuccessful effort to upset voting there, police said.Meanwhile, hackers breached the website of the Nigeria Independent Electoral Commission, and officials extended voting Saturday because of other problems with equipment.Boko Haram's violent attempt to disrupt the election was short-lived in the village of Biri Fulani, in the Nafada local government; the attackers fled when pursued by the military, said police spokesman Fwaje Atajiri in Gombe.Voting then resumed in Gombe, police said.A hacking group took responsibility for taking over the website of the Nigeria Independent Electoral Commission.