Surprised he didn't last longer, really. Thought his money would have taken him far.
I find it a bit weird and stupid for him to use a European airport, despite not being part of the EU Montenegro has a ton of extradition treaties, and with him on the Interpol list, there is no chance they will not deport him. Pretty a stupid move, he should have fled to some south Asian country instead.
Probably easier to move around there, true, but then he probably also fears the retribution that he is likely to run into with the deep networks of triad members who would have found him a bit more easily than in Europe. I'd wager he felt safer dealing with the higher risk of formal enforcement than with the lower but deadlier risk of informal street justice.