Britain said on Saturday that it had engaged in a third wave of "proportionate and targeted strikes" against Iran-linked Houthi militants in Yemen.

"The Royal Air Force engaged in a third wave of proportionate and targeted strikes against Houthi military targets in Yemen. We acted alongside our US allies, with the support of many international partners, in self-defence and in accordance with international law," Defence Minister Grant Shapps said in a statement.

U.S. officials told Reuters earlier in the day that the United States had launched a series of strikes against targets in Yemen.

(Editing by Jonathan Oatis)