Tunisia have withdrawn their bid to host the 2010 World Cup, according to Fifa president Sepp Blatter.
The decision is said to have resulted from Fifa's refusal to consider the proposal to co-host with Libya.
"We have received the withdrawal of Tunisia," said Blatter. "They will only be a candidate if there is a possibility of co-hosting.
"There will be no co-hosting, because at least three of the associations can organise the World Cup individually."
It is unclear whether Libya remains as an individual contender but Tunisia's withdrawal leaves South Africa as the favourite, ahead of Morocco and Egypt.
The decision will be made when Fifa's executive committee meets on 15 May in Zurich.