Somalis Prime Minister Ali Mohammed Gedi escaped unhurt when a bomb exploded as his convoy was on its way to the capital's airport on Thursday.

Somalia media reports reaching here said no one was injured and no vehicles damaged but one man was arrested after an apparent attempt to kill him in the Somali capital of Mogadishu .

Government spokesman Abdi Haji Gobdon was quoted as saying the bomb went off as the first of 15 vehicles in the convoy passed.

Gobdon said, however, that police arrested one person at the scene, and another one ran away.

"The government soldiers soon seized one suspect while the other one escaped," Gobdon told the Shabelle News.

The prime minister's convoy was returning from the airport where the bodies of four Ugandan peacekeepers were flown home after they were killed on Wednesday.

There have been at least three attempts against Gedi's life since he took office in May 2005.

The last attempt was in November 2005, when gunmen threw grenades and a land mine exploded near his convoy, killing at least five bodyguards and wounding several others.

The Thursday's incident came a day after a roadside bomb struck a convoy carrying African Union peacekeepers, killing four Ugandan peacekeepers.

Despite Wednesday's attacks, Kampala has vowed it will not pullout its troops from Somalia.