Imagine the cops are looking for a criminal. That criminal is hiding but not for long in one place. He is changing places all over the world and continuously hiding . What is the correct word or phrasal verb for this? "The criminal is roaming worldwide" is wrong I believe as this sentence would mean that he is on a happy vacation seeing places. So, what is the correct word? Please advise.
to go to ground OED
fig. (of a person), to withdraw from public notice and live quietly or ‘lie low’.
the literal is of a hunted fox ... ducking underground.
As in your example:
"The criminal is roaming worldwide, unseen, having gone to ground."
1964 Ann. Reg. 1963 326 The four men ‘went to ground’, probably in Johannesburg.
From Longman's go to ground: B(BrE)
to make it hard for people to find you
wherever you are, usually for a long while.