Looks like the helo was off course and flying above the ceiling.
Can't tell if ATC dropped the ball, or helo pilot did something stupid. Flying at night means he might have been wearing NVG at the time- limiting vision range. Either way- somebody has some questions that need answering.
There were members of the US national figure skating team on board. Oddly enough, in 1961, the ENTIRE US national figure skating team died in a plane crash on approach to Brussels airport.