Caf chief Hayatou out of hospital
Caf president Issa Hayatou
Issa Hayatou's health has been a source of concern in recent years

Issa Hayatou, the president of the Confederation of African Football (Caf), has left hospital after his collapse at a conference in Cairo.

The 64-year-old felt unwell on Thursday evening and was taken to hospital in the Egyptian capital for tests.

He was kept in overnight for observation.

"The condition of Hayatou is very good," Caf media director Suleiman Habuba told the BBC on Friday. "He was released today just after midday."

Habuba said Hayatou's collapse was because of stress and fatigue after the 'big effort' he had made in the last few days to prepare for the World Cup conference.

Football officials from both Fifa and Caf have been meeting at the latter's headquarters in Cairo to analyse the 2010 World Cup, the first finals to ever be staged on African soil.

"Last night, he was chatting with Fifa and Caf officials over coffee at around nine in the evening when he told them he wasn't feeling well," Habuba told the BBC.

"He was immediately taken to hospital and admitted, but was released today at 12.15."

According to Habuba, Hayatou may still attend the conference's closing ceremony later on Friday but this is still uncertain.

Hayatou, a Cameroonian national, has been Caf president for 23 years - but his health has often been a source of concern in recent years.

The Caf president is also a Fifa vice-president and was a member of the World Cup organizing committee.