A massive blast outside Karachi Airport in Pakistan on Sunday killed two people and injured at least eight, officials said.

Footage of the blast showed flames engulfing cars and a thick column of smoke rising from the scene. One civil aviation worker said the explosion shook airport buildings.

A Pakistani separatist group claimed responsibility for a late-night bombing that targeted a convoy with Chinese nationals outside the country's largest airport, killing two workers from China and wounding eight people,