lie low

Also lay low. Keep oneself or one's plans hidden; bide one's time to act. For example, The children lay low, hoping their prank would soon be forgotten, or The senator decided to lay low until his opponent had committed herself to raising taxes. This expression calls up the image of a hunter concealed in the brush, waiting for game. [Colloquial; late 1800s]

The verb has 2 meanings:

Meaning #1: keep a low profile, try to be inconspicuous

Meaning #2: to try to avoid detection esp. by police