At least 16 people were killed and more than 40 people injured when a suicide bomb detonated outside of Afghanistan's Supreme Court Tuesday, police said.
The attacker steered his explosives-packed vehicle at buses meant for court employees, including judges, police told the BBC.
The explosion occurred during the evening rush hour as the court employees were waiting to be taken home.
The building is near the U.S. Embassy and NATO headquarters.
Witnesses said at least three vehicles carrying Supreme Court employees were damaged, Khaama Press said.
The BBC said the blast was the deadliest attack in the country's capital since the end of 2011.
A Taliban spokesman said he was still collecting information about the attack, The New York Times reported. The Taliban pledged to target government offices and employees as part of their annual spring offensive.
Police and army troops cordoned off the area. The Times said one soldier pushed away a foreign journalist, shouting, "It is all your foreigners' fault."