Rupert Murdoch, the Australian-born co-chairman of News Corp. known for his conservative political views, doesn't agree with Donald Trump on immigration.

"Mexican immigrants, as with all immigrants, have much lower crime rates than native born," Murdoch wrote in a Twitter message on Sunday. He cited El Paso, Texas, as an example of a safe city with a high immigrant population. "Trump wrong," he said.

In another tweet, he indicated that while 267,000 illegal immigrants are in jail, there are two million others also in U.S. prisons.

In a separate tweet, he said, "Trump popularity based on frustration with Washington, D.C., and endless regulations over people's lives."

Controversy grew in June when Trump announced he would run for the Republican presidential nomination and criticized U.S. immigration policy. "The U.S. has become a dumping ground for everybody else's problems," he had said at the time. "When Mexico sends its people, they're not sending their best. They're sending people that have lots of problems, and they're bringing those problems with [them]. They're bringing drugs. They're bringing crime. They're rapists. And some, I assume, are good people."

Murdoch, whose sprawling media empire includes Fox News, has been a champion of immigration reform, often calling on congressional Republicans to craft legislation that would offer a "path to citizenship" for illegal immigrants currently in the U.S.