Nato troops have killed a civilian at the scene of a suicide bomb attack in
Several others were injured when the
At least three people died in the suicide bombing, officials say. Another civilian died in a suicide bombing later on Saturday in Mazar-e-Sharif.
Saturday's attacks bring to four the number of suicide bombings in
Suicide attacks have become a regular feature of the Taleban's campaign against the Western-backed government of President Hamid Karzai in recent years.
'Accidental discharge'
The BBC's Charles Haviland in
Nato's Isaf force said two Afghans had accidentally been shot by its soldiers. One of the Afghans later died, it announced with regret.
"Initial indications are that an Isaf soldier's weapon accidentally fired," said Isaf spokesman Maj John Thomas.
The
"It appears to have been an accidental discharge," he told the AFP news agency. "There might have been a weapons malfunction or some other cause. We don't know."
Anger over civilian casualties has been growing among Afghans and crowds gathered at the scene to protest afterwards.
Convoys targeted
In the suicide attack on
The blast was powerful enough to shatter shop windows.
The government says an Isaf convoy was the target of the attacker, but Isaf and the US-led coalition said it appeared that private security vehicles had been targeted.
Suicide attacks have claimed hundreds of lives in
One in southern
Saturday's blast in Mazar-e-Sharif injured another 12 people, security officials in the northern city told the BBC.
They said the attacker rammed his motorbike into a passing Nato convoy. There were no reports of Nato casualties.
PHOTO CAPTION
An Afghan policeman guards the site of the