The Dow Jones news ticker in Times Square in New York.

Dow Jones servers were infiltrated by a group of Russian hackers looking for stock tips, Bloomberg reported Friday.

The Federal Bureau of Investigation's New York office confirmed to CNBC that it is aware of the hack and is investigating.

In a statement, Dow Jones said, "to the best of our knowledge, we have received no information from the authorities about any such alleged matter."

"We are looking into whether there is any truth whatsoever to this report by a competitor news organization," Dow Jones said.