It was only a matter of time.

Last season, he accounted for the second fastest time of all time, then at 46.87.

Now the Norwegian has broken both that and Kevin Young's world record of 46.78 from the Olympics in Barcelona in 1992.

In front of the home crowd at Bislett in Oslo, he won by a time of 46.70.

The race was also the 25-year-old's season debut.

The article is updated!