An Afghan man died and five people were hurt in a bomb attack on a UN vehicle in Afghanistan on Friday, officials said.
It was the second deadly blast in a week as the embattled country prepares for next month's presidential election.
"One person was killed and five injured, three of them severely," said Khan Mohammed, Kandahar police chief.
A remote-controlled bomb attached to a car detonated in the southern city, the former Taliban headquarters, at about 2pm, provincial intelligence chief Abdullah Laghmanai said.
He said the target appeared to be a passing UN vehicle, which narrowly escaped the explosion.
"One person in the vehicle was slightly injured as the windows of the car shattered," he said.
UN spokesman Manoel de Almeida e Silva confirmed that one person, a liaison officer with the US-led coalition, was injured in the vehicle but said the other three passengers in the UN vehicle escaped unharmed.
"There was another vehicle, a taxi, in which people were wounded," de Silva said, adding he had no reports anyone had been killed.
The attack came five days after three Americans and at least six other people were killed in a similar bomb blast in Kabul.
An investigation was under way into Friday's attack, said Laghmanai, who did not speculate on who carried out the attack.
No one has been arrested over the bombing, but Laghmanai said about three people "were picked up" at the site to help with investigation.
In the past, remnants of the ousted Taliban rulers have been blamed for similar acts.
Both the Taliban and al-Qaeda claimed responsibility for Sunday's bomb blast in Kabul, which hit a US security firm.
Fighters loyal to the former Taliban regime have vowed to disrupt October 9 presidential elections and their preparations.
Attacks blamed on the Taliban or allied insurgents have claimed the lives of at least 12 electoral workers since May and injured over 33 other electoral staff.
Civilians and police officers have also been killed and injured in attacks on voter registration sites and UN vehicles.
Security has deteriorated in the run-up to polls, with the European Union and the Organization for Security Cooperation in Europe announcing they would scale back their election monitoring teams for the elections due to security concerns.
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