A bomb blast in the Afghan capital killed a police officer and wounded three other people early on Tuesday, a government official said, on the day marking the adoption of the country's post-Taliban constitution.
The blast, a rarity in Kabul, served as a grim reminder of insurgents’ ability to strike at will across the country. It was a jarring preamble to the scheduled departure on Tuesday of members of a government-appointed peace delegation to Pakistan, where they will meet with Pakistani officials and discuss efforts to launch talks with Taliban rebels.
The early morning attack in downtown Kabul took place in an area where several government buildings stand, including the finance and defence ministries, said Abdul Saboor, an official with the interior ministry's counter-terrorism unit. He said two the police officers and a civilian were wounded.
The bomb went off as the police officer approached the device to defuse it, Mr Saboor said.
Associated Press television footage showed the bomb ripped a meter-high hole in the side of a brick building where it had been placed.
Unlike other parts of the country where the insurgents are more active, Kabul has been spared the worst of the violence that has gripped many parts of Afghanistan. The last major attack in the capital took place on December 19, when two insurgents strapped with explosives ambushed a bus carrying Afghan soldiers, leaving at least five dead and nine wounded. The attack was claimed by Taliban.
On Tuesday's bombing appeared to be a symbolic strike against the government. Later in the day, President Hamid Karzai was scheduled to give a speech marking the anniversary of the country's post-Taliban constitution a document signed in 2004 that laid out a new course of the nation.
The Taliban had ruled Afghanistan for five years with a strict interpretation of Islamic law until it was ousted in 2001 by a US-led invasion. It later became the main insurgent group fighting the US-backed government in Kabul.
Mr Karzai has repeatedly pushed to bring the insurgents into the political mainstream if they accept the country's constitution and repudiate Al-Qaeda. Insurgents have so far rebuffed the efforts.
Much of the insurgency's leadership is believed to be hiding in Pakistan, and Afghan and Nato officials argue that the ability to secure Afghanistan hinges in large part on Pakistan's willingness to crack down on militants who use its territory as a staging ground for attacks. The high peace council delegation is also expected to meet with Pakistan's President and Prime Minister.