Firefighters killed in blast following truck and car collision in Mongolia

Three firefighters died in the blast (Mongolia National Emergency Management Agency via AP)

Three firefighters have been killed and 11 other people were injured after a truck carrying 60 tonnes of liquefied natural gas and a car collided in the Mongolian capital, causing a series of explosions.

Images showed a massive fireball at the scene of the crash outside a shopping centre early on Wednesday, close to an apartment building and international school in Ulaanbaatar.