Over 50 people killed, including 17 children, in western Afghanistan after a bus carrying refugees collided with a truck and motorcycle and caught fire, according to provincial government spokesman Ahmadullah Muttaqi and local police.According to a news report from Al Jazeera, police said that the accident occurred due to the excessive speed and negligence of the bus. The bus route to Kabul was carrying refugees who were recently deported from Iran, according to provincial official Mohammad Yousuf Saeedi.They were part of a massive wave of Afghans who were deported from Iran recently. Earlier, Iranian minister of interior Eskandar Momeni announced that around 800,000 people would be deported by March. Saeedi said that all the passengers boarded the bus at a border crossing point, Islam Qala.Three passengers survived the accident after the bus collided with a motorcycle first and then hit the truck, which was carrying fuel. The collision was so strong that it led to the eruption of fire. Two people in the truck and another two on the motorcycle were among the deceased.