In an attack that apparently came from a Russian intelligence agency—and that may or may not be related to similar recent cyber attacks on other Democratic party organizations—computer systems tied to Hillary Clinton’s presidential campaign have been hacked, New York Times and Reuters reported on Friday.

When the Washington Post reported Monday that the Democratic National Committee’s servers had been breached by a team of Russian hackers, the DNC was quick to claim that nothing pertaining to the party’s many supporters had been pilfered. But a new cache of apparently hacked documents obtained by Gawker contains a wealth of donor information, including e-mail addresses and cell phone numbers for hundreds of high-profile and wealthy Democratic fundraisers.