KABUL — It was lunchtime, and it was a Saturday, the first day of the Afghan workweek. In the city of Jalalabad, as elsewhere, plenty of people needed to make a stop at the bank.
For scores of them, this quick errand turned into a nightmare. In the latest of a series of methodical and deadly strikes in Afghanistan's largest cities, gunmen and bombers stormed a busy bank branch in the main urban hub of eastern Afghanistan, killing at least 18 people and injuring more than 70, provincial authorities said.
The Taliban claimed responsibility, saying the attack was aimed at Afghan police officers and soldiers who draw their monthly pay through Kabul Bank, the troubled financial institution that was targeted.
"In that branch, the puppet regime's military... receive their salaries," Taliban spokesman Zabiullah Mujahid said.
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Ahmadzai Abdulzai, a spokesman for the government of Nangarhar province, said the assailants killed a bank guard as they forced their way inside, then opened fire on the long lines of people waiting to draw money or make deposits.
Of those killed and injured, most were civilians, the spokesman said, but the dead also included the deputy police chief and the head of criminal investigation.
Witnesses described screams and panic as customers tried to flee the building. Security forces cordoned off the district amid the din of gunfire and explosions.
"Police tried their best to rescue people, but it was very, very difficult," Abdulzai said.
Robbery did not appear to be a motive, the authorities said. At least seven attackers were thought to have taken part, including two bombers who managed to detonate their explosives belts.
The five other attackers were killed by police gunfire, officials said.
High-profile insurgent attacks have also taken place this month in the south's biggest city, Kandahar, and in the capital, Kabul.
Coordinated onslaughts by teams of bombers and gunmen on targets including a police station and a shopping mall appear aimed at sowing fear and chaos.
They seem designed to demonstrate insurgents' ability to smuggle fighters and weapons into city centers, a means of challenging government forces and the Western military at a time of year when battlefield confrontations typically drop off because of winter weather.