Republican presidential nominee Donald Trump | Spencer Platt/Getty Images UN news agency scrubs tweet calling on Americans abroad to ‘end Trump’ The tweet was deleted within 20 minutes, without explanation.

The United Nations News Centre — the official U.N. news service — tweeted, then quickly pulled, a post that called for "8 million Americans abroad" to "stop Trump."

The tweet, published at 9:14 p.m. ET on Thursday, urged American expats to share a voter registration tool on the website of the activist organization Avaaz that states, "U.S. Citizens abroad could defeat Trump ... if they voted."

The web page, titled "The October surprise that will end Trump," allows users to sign up for help registering to vote in the November 8 presidential election, and encourages them to enlist their friends as well.

"At a time when Trump is trying to divide us, we could help defeat him if we all share this page with EVERYONE. Let’s reach every U.S. voter abroad," it read.

The tweet was deleted within 20 minutes, without explanation. The United Nations did not immediately respond to a request for comment.