Washington: The founder of the global News Corp. media empire, Rupert Murdoch, is suggesting that President Barack Obama isn’t a “real black president.”

Murdoch was praising Republican presidential candidate Ben Carson and his wife on Twitter Wednesday evening when he wrote: “Ben and Candy Carson terrific. What about a real black President who can properly address the racial divide?”

Later, Murdoch recommended a New York magazine article asking whether Obama has done enough for the African-American community.

He also recommended a New York magazine article for “minority community disappointment” with the president, BBC reported.

Murdoch has previously tweeted his admiration for Carson, a 63-year-old retired neurosurgeon who is one of 15 hopefuls vying to become the Republican candidate for the US presidency in 2016.

A few days ago, he tweeted: “Everywhere pundits keep underestimating Ben Carson. But public understand humility as admirable, listen to the multi-faceted strong message.”

Carson caused controversy last month when he said a Muslim should not run for president because Islam was inconsistent with the US constitution.

Murdoch is the founder of Fox News Channel, and News Corp’s publications include The New York Post and The Wall Street Journal.

The 84-year-old Murdoch has praised Carson on Twitter before, calling him “irreproachable on background, achievements, character, vision.”

He is ranked as one of the world’s most powerful people.