At least 1,400 people were killed and more than 3,100 others injured, according to the Afghan authorities, and the death toll was expected to rise.

© Wahidullah Kakar/Associated Press

The quake, near the border with Pakistan, injured more than 2,500 people in mountainous areas that rescue workers took hours to reach.

© Hedayat Shah/Associated Press

Afghanistan was on a timid recovery path. But four years after the Taliban retook power, it has been badly hit by aid cuts and an inflow of two million Afghans forced out of Iran and Pakistan.

© Jim Huylebroek for The New York Times

Afghanistan was on a timid recovery path. But four years after the Taliban retook power, it has been badly hit by aid cuts and an inflow of two million Afghans forced out of Iran and Pakistan.

© Jim Huylebroek for The New York Times

The bus collided with two vehicles. The victims were among the 1.8 million Afghans expelled from Iran as the country vowed to deport undocumented residents en masse.

© Omid Haqjoo/Associated Press