U.S. Senator John McCain Has Died Aged 81

He announced he was stopping cancer treatment on Saturday.

U.S. Senator John McCain, the war hero who became the Republican Party's standard-bearer in the 2008 election, has died. He was 81.

His office says McCain died on Saturday surrounded by family at his Arizona home. He had battled brain cancer.

In 1967, his plane was shot down on a bombing mission over North Vietnam. He was severely injured and spent more than five years as a prisoner of war.

He was elected to the House of Representatives in 1982 and the Senate in 1986. A conservative on most issues, he pushed for campaign finance reform and the effort to account for those missing in Vietnam.

He ran unsuccessfully for the Republican presidential nomination in 2000, then won it in 2008. But he and running mate Sarah Palin lost to Barack Obama.

Tributes Pour In For Lost American "Hero"

Just minutes after news broke of McCain's passing, tributes to the admired war hero flooded Twitter and other social media platforms.

His family also shared messages, expressing their grief and sadness at his passing.

McCain Passes Just One Day After Stopping Treatment

McCain's family announced on Saturday that he had decided to discontinue treatment for brain cancer. He'd been battling with the disease for nearly a year.

In a statement, the family said McCain had surpassed expectations for survival, but "the progress of disease and the inexorable advance of age render their verdict".

U.S. Senator John McCain Stops Brain Cancer Treatment

"With his usual strength of will, he has now chosen to discontinue medical treatment," the statement said.

McCain's wife Cindy tweeted the statement, expressed her love for her husband and thanked medical staff for treating him.

With AAP.