FIFA will invest in ticketing offices in all of the host cities to boost World Cup ticket sales to local fans.

FIFA secretary general Jerome Valcke said he has learned from this year's Confederations Cup, when organizers had to give away tickets to some games to boost crowd attendance.

He said Wednesday that FIFA will spend up to $4.1 million US on ticket and call centres to accommodate local habits of buying tickets late and the minimal spread internet sales. The funds are being reallocated from less essential issues in the World Cup budget.

Strong local support and full stadiums are considered essential to make the first World Cup in Africa a success.