Caught by “his own people”

One of the TV bulletins (can’t recall which) reported how Nai Yin Xue was caught by “his own people”.

This got me wondering.  Was he caught be a family member of his?

If not, then what did TV news mean?

And what is so unusual about being caught by people of your own race?  Is there some reason viewers should think it is unusual for Chinese people to turn in a Chinese murderer?