The migrants are among more than 2.2 million Afghans who have returned from Iran and Pakistan in recent months amid crackdowns on people said to be living there illegally.

A bus carrying Afghans recently deported from Iran crashed and burst into flames Tuesday, killing dozens of men, women and children.

Seventy-six people were killed in a collision between a bus carrying Afghan migrants just deported by Iran and two other vehicles in western Afghanistan, a provincial official said Wednesday.

At least 75 people, including 17 children, were killed in a traffic accident involving a bus carrying Afghan migrants who were deported from Iran in western Afghanistan. A senior Afghan military commander said the bus caught fire after colling with a truck that was carrying oil barrels.