A suicide bomb attack has killed six soldiers and wounded at least 12 in northwest Pakistan. The bomber drove a vehicle

packed with

explosives

into the office of the

paramilitary

Frontier Corps in the city of Bannu. The Pakistani Taliban say they carried out the attack. These two local men were present at the time.

"It was six o'clock in the morning. I was listening to songs on my mobile phone when all of a sudden a

blast

occurred, and there was darkness. My face was covered with dust."

"A powerful explosion took place. When we came out, plumes of smoke were rising. There was darkness. The electricity was cut off. We couldn't see anything. My hotel is badly damaged. It's the same with my house, which is in front of my hotel."

Brazil's environmental agency has fined the American oil company Chevron more than $5m for breach of its environmental licence when it tackled an oil

spill

in November. The agency Ibama said Chevron lacked the necessary equipment and was slow to respond to the leak. The agency had already fined Chevron $28m for causing the spill.

Part of a Russian satellite that failed to reach orbit has crashed onto a street named in honour of Russian space explorers. A fragment of the satellite went through the roof of a house in Cosmonaut Street in the Siberian village of Vagaytsevo. No one was hurt. The failure is the latest in a series of

setbacks