The Taliban has claimed responsibility for twin suicide blasts that struck a paramilitary training center in northwest Pakistan on Friday, killing at least 80 people and injuring 100 more. The Taliban has vowed to carry out more attacks in revenge for the death of Osama bin Laden.

A dark day for the city of Charsadda...

Just after dawn, twin blasts struck a training center of Frontier Constabulary. At that time, hundreds of young recruits were gathering in front of the gate of the center, boarding vehicles to go home at the end of a training session.

Police say one suicide bomber was on a motorcycle and the other was on a horse-drawn cart. They used at least 10 kilograms of explosives, packed with ball bearings and nails.

Local baker Mohanmmad Nazar said, "This morning all the recruits were getting ready to go home after their training. They were all happily boarding the vehicles when suddenly there was a huge blast. All of us were terrified - everyone was screaming and running everywhere."

Most of the killed were recruits, who were ready to assume duties after holidays.

Local media reported that the blasts were timed to cause significant casualties. The second blast did not occur until rescue crews arrived at the scene to treat victims.

Local resident Aslam Khan said, "Just as we were diving for cover into a shop, there was another blast. Then there was chaos. We tried to gather up the dead and the injured; it was just horrible."

Hospital sources warn that the death toll could rise as many of the injured are in a critical condition and hospitals lack sufficient medical facilities.

The Pakistani Taliban claimed responsibility for the attacks. The group says it will continue its revenge for bin Laden. The targets include the US and its allies.

Pakistani Prime Minister, Syed Yusuf Raza Gilani, condemned the violence and reiterated the government's resolve to fight terrorism.