Washington, Dec 4 (IANS): White House Communications Director Alyssa Farah has announced her resignation "to pursue new opportunities" outside the US administration.

In a resignation letter obtained Thursday by CNBC, Farah called her tenure in the administration "the honor of a lifetime".

"I'm honoured to have worked with the entire team on Operation Warp (Speed) who helped usher in a safe and effective Covid-19 vaccine in record time that will save countless thousands of lives.

"I'm forever grateful to have had the opportunity to serve my country," she added in the letter.

Her last day at the White House is on Friday, and she reportedly plans to start a consulting firm focusing on the corporate, political and defence realms, reports Xinhua news agency.

Farah previously served as press secretary for US Vice President Mike Pence and spokesperson for the Pentagon.

White House Communications Director is a senior member of the presidential staff, responsible for crafting and promoting the message and agenda of the administration.