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Investigators said last week that they had found evidence of a bird strike on the Boeing 737-800 plane - with feathers and blood stains found on both the plane's engines.

An investigation into the crash - the deadliest on South Korean soil - is still ongoing but will focus on the role of the bird strike as well as a concrete structure at the end of the runway, which the plane slammed into after making an emergency landing.

Investigators say they have found evidence of a bird strike on a passenger plane that crashed in South Korea in December and killed 179 people.

The inquiry into the crash - the deadliest on South Korean soil - will now focus on the role of the bird strike and a concrete structure at the end of the runway, which the plane crashed into.

Investigators are still looking into what caused the crash, but the pilot had warned of a bird strike before pulling out of a first landing attempt.