KANDAHAR, July 12, 2008 (AFP) - Seven people including a six-year-old boy were killed in Taliban-style bombings in Afghanistan Saturday, including a suicide attack in the insurgency-hit south, officials said.

In one attack, a suicide bomber detonated explosives strapped to his body near an Afghan military convoy in southern province of Helmand, killing two soldiers and a child, a police commander said.

The blast comes days after a suicide car bomb targeting the Indian embassy in Kabul killed more than 40 people including two Indian envoys.

'A suicide bomber on foot blew himself up near a joint convoy of police and army. Two soldiers and a six-year-old boy were killed,' provincial police chief Mohammad Hussein Andiwal told AFP.

Four other people including a police officer were wounded in the blast in the province's restive Marja district, the police commander said.

There was no immediate claim of responsibility for the attack but similar acts have been blamed on the Taliban militant group which has led an insurgency since being ousted from power in 2001.

Four police officers were killed in two simultaneous bomb explosions in the neighbouring province of Zabul the same day, deputy provincial police chief Jailani Khan told AFP.

The devices placed under two bridges on the main road between Kabul and Kandahar were exploded remotely, the police official said, blaming the attack on Taliban militants.

Three other police officers were wounded in the blasts, he said, adding that 'a big portion of the road was destroyed.'

Another roadside bomb killed an Afghan civilian and injured another in the eastern province of Paktia on Friday, a provincial spokesman said.

The Islamic militants have stepped up their attacks in the past two years particularly using suicide blasts.

The bombing at the Indian embassy in the capital was the deadliest of its kind since the fall of the hardline Taliban regime.

The Taliban have denied a role in the attack and authorities have blamed 'foreign intelligence', a reference to Pakistan's spy agency.