(Refiled to add the dropped word 'some' in the headline and paragraph 1)
WASHINGTON, Jan 14 (Reuters) - The United States is withdrawing some personnel from key bases in the region as a precaution given heightened regional tensions, a U.S. official told Reuters on Wednesday, speaking on condition of anonymity.
The disclosure follows remarks by a senior Iranian official who told Reuters earlier on Wednesday that Tehran had warned neighbors hosting U.S. troops that it would hit American bases if Washington strikes.
(Reporting by Phil Stewart; Editing by Andrew Heavens)
