Bomb explosion in Islamabad

At least two loud explosions have been heard in Pakistan's capital, Islamabad, residents say.

Some reports say at least one of the explosions took place in the nearby city of Rawalpindi, 12km (seven miles) from the capital city.

Residents said buildings in Rawalpindi shook with the impact. It is not clear what caused the explosions.

A month ago, a car bomb attack near the Danish embassy in Islamabad killed six people and wounded 30 others.

Police in Pakistan say they are investigating two loud explosions heard in Pakistan's capital, Islamabad.

The cause and location of the blasts is not clear, but officials say all "sensitive installations" are safe.

Some reports say at least one of the explosions took place in the nearby city of Rawalpindi, 12km (seven miles) from the capital city.

Rawalpindi is the headquarters of Pakistan's army and the residence of President Pervez Musharraf.

A month ago, a car bomb attack near the Danish embassy in Islamabad killed six people and wounded 30 others.

'All clear'

Residents said buildings in Rawalpindi shook with the impact of the blasts.

"We have information of an explosion. We are still checking where is the site and what is the cause," Rao Mohammed Iqbal, a senior Rawalpindi police officer, told the Associated Press news agency.

"All sensitive installations are clear," he added.

Meanwhile, at least seven people have been killed in an explosion which destroyed the house of a militant leader in the Khyber tribal district in north-west Pakistan.