The Justice Department on Thursday is expected to indict six Iranian hackers for cyberattacks against the United States. The indictment is set to come after years of American frustration with Iran over the issue.

The information was leaked to Reuters by officials inside the department late on Wednesday. The officials claimed the indictment will link the hackers directly to the Iranian government, and will focus mainly on a 2013 breach of the Bowman Avenue Dam in Rye Brook, N.Y.