by BBC News
At least 55 people have been killed in twin suicide bombings outside a munitions factory in the Pakistani town of Wah, police say.
The attack is the deadliest on a military site in Pakistan’s history.
The bombs hit the city, 30km (18 miles) north of Islamabad, as workers left. Many people were injured.
A spokesman for the Pakistani Taleban said they had carried out the attacks, which he said were a response to army violence in the country’s north-west.
Speaking to the BBC, Maulvi Umar of the Tehrik-e-Taleban Pakistan said the bombings in Wah were in retaliation for the deaths of “innocent women and children” in the tribal area of Bajaur.
He said more attacks would take place in Pakistan’s major urban conurbations unless the army withdrew from the tribal areas.
Correspondents say Wah, in the province of Punjab, is a strategically important town normally under heavy security as it is home to a large industrial complex producing conventional arms and ammunition.
Local police chief Nasir Khan Durrani told the BBC: “Many others have been injured and we expect casualties to rise in the coming hours.
“At least 25 people have been critically injured.”
Mr Durrani said none of the dead was military personnel.
The first blast took place outside the gate of the factory as workers were leaving work during a shift change.
Minutes later, another blast took place at another gate of the same factory.
Mohid Ahmed, a student from Wah, was on a tour of the ordnance factories and witnessed the immediate aftermath of the blast from his bus.
“It was very disturbing,” he told the BBC.
“There was smoke, bodies and blood. Those who were left alive were in great suffering. I saw a man clutching his leg and crying in pain and asking for help. I saw people running away from the scene.”
On Tuesday, 32 people were killed in a suicide attack on a hospital in the northern town of Dera Ismail Khan.
The BBC’s Syed Shoaib Hasan says it is the second recent direct attack on a Pakistani military installation.
Last September, 17 officers and soldiers were killed in a suicide attack on a special forces base in the nearby town of Tarbela-Ghazi.
The ordnance factories at Wah lie on the road into Pakistan’s troubled north-west, where fighting between security forces and Islamic militants has raged in recent weeks.
Established in the early 1950s, it is a sprawling complex manufacturing everything from tanks and small arms to artillery shells.
Militants have often threatened to increase the level of violence unless the army pulls back from tribal areas close to the border with Afghanistan.
On Monday, President Musharraf, a key ally of President Bush’s “war on terror” resigned after nine years in power to avoid being impeached.