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Donald Trump campaign website goes offline

Republican presidential candidate and businessman Donald Trump addresses an audience during a campaign event Dec. 28, 2015, in Nashua, N.H.

AP Photo/Steven Senne

Donald Trump's campaign website went offline Saturday morning, and a New York-based hacker collective claimed responsibility.

New World Hacking, which purports to focus attacks on terrorist groups like the Islamic State of Iraq and Syria (ISIS), added that it was a "1 hour test":

The website appeared to be back online around noon Eastern Time.

An archived snapshot of DonaldJTrump.com remained online during the outage thanks to CloudFlare, the company that powers the site.

And an error message on the mobile version of the site read: "We're experiencing an unusually high volume of traffic at the moment. We're Honored That so Many People Want to Show Their Support to Help #MakeAmericaGreatAgain!"

New World Hacking recently claimed responsibility for shutting down the BBC News website for several hours earlier this week.

According to BBC technology correspondent Rory Cellan-Jones, the group launched a Distributed Denial-of-Service (DDoS) attack against the site as a "test" of their systems: