Federal investigators have accused a worker at the New York-Presbyterian Hospital/Weill Cornell Medical Center of stealing patients' names, phone numbers and Social Security numbers, The New York Times reported.

After the hospital was made aware of the theft in January, it was confirmed in an internal investigation hospital spokeswoman Myrna Manners said.

"We obviously deeply regret that this has happened," she told the Times.

The U.S. attorney's office, the U.S. Postal Inspection Service and the U.S. Secret Service reportedly were all looking into the case.