Stay under the radar (3,3)

I believe the answer is:

lie low

(Other definitions for lie low that I've seen before include "Keep concealed or quiet" , "Conceal oneself or one's intentions" , "'Keep out of sight, avoid attention (3,3)'" , "Conceal oneself, don't make intentions known" , "Stay out of sight, be inconspicuous" .)

I've seen this clue in the Newsday.com, The Washington Post, The Sun and the L.A. Times Daily.

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