Seems like a lost journo on a trip for fame again. The one writing the story in the posten, that is.
I do not know if airspace is RVSM over there, but would think it is. If it is (reduced vertical separation minima airspace) then aircraft can be at 300 metres from each other (vertically, which equals to 1000 feet). That is standard separation, applied everyday in most places.
So, if they're RVSM and separation was vertical, there was no infringement. If it was laterally or they do not have RVSM there, then that's something else.
A.