Media mogul Rupert Murdoch on Sunday took a shot at GOP presidential candidate Mitt Romney’s campaign team on Twitter.

Murdoch posted a tweet calling on Romney to hire “real pros” to help him defeat President Obama in the November general election.

It’s not the first time that Murdoch has needled the presidential contenders. Last weekend, in two tweets, he pushed Romney to clarify his stance on immigration.

And in January, Murdoch hit Obama and Google for their positions on anti-piracy legislation, accusing Obama of having “thrown in his lot with Silicon Valley paymasters who threaten all software creators with piracy.” 

During the Republican primary season, Murdoch signaled his support for former Pennsylvania Sen. Rick Santorum, describing him as the only contender with a “genuine big vision” for the country.