Intentional provocation or fishing expedition?

On Saturday, South Korean soldiers fired 40 warning shots at a group of five North Korean soldiers who crossed the centre line of the shared Demilitarized Zone.

It is unclear if North Korea sent the group as an intentional provocation or if they were going fishing at a nearby stream, an anonymous South Korean official from the Joint Chiefs of Staff told The Associated Press. (Source)

This, on the same weekend the world is watching to see if North Korea will test a nuke! Maybe the whole country is crazy.