Marcus Nybakken witnessed the tragic event when two people were killed in a shooting on a popular bar street in central Oslo.

Another 20 or so people were injured, several of them seriously.

- When it had calmed down a bit and I did not hear any more shots, I went to London to help someone who was injured, says Marcus Nybakken.

- It's tragic, my first thought was that Pride was the target so it's scary.

See more in the clip above.

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NRK journalist Olav Rønneberg was present when the perpetrator fired shots.

Hear him tell.

Photo: NRK