Doug Stanglin, and Heidi M. Przybyla

USA TODAY

Hillary Clinton's presidential campaign says hackers gained access to a Democratic National Committee data program the campaign uses for voter analysis but did not break into its own separate computer system, emails or voicemails.

A Clinton campaign aide said hackers had access to the program for five days. The data is used to analyze voters and voting patterns but does not include Social Security numbers or credit card information, the aide said.

"An analytics data program maintained by the DNC, and used by our campaign and a number of other entities, was accessed as part of the DNC hack," the Hillary for America campaign said in a statement late Friday. "Our campaign computer system has been under review by outside cyber security experts. To date, they have found no evidence that our internal systems have been compromised.”

Russia hacks Democratic National Committee, Trump info compromised

The DNC hacking surfaced last week on the eve of the Democratic convention when politically embarrassing DNC emails were released by Wikileaks, an international group that routinely publishes secret information, news leaks and classified material from anonymous sources. The hackers had access to the DNC network for about a year, The Washington Postreported, quoting DNC officials and computer experts.

Experts: Hard to prove Russians behind DNC hack

In another intrusion, the Democratic Congressional Campaign, which oversees House races, said on Friday that its systems had been hacked. Together, the databases of the national committee and the House organization contain some of the party’s most sensitive communications and voter and financial data.

Meredith Kelly, a spokeswoman for the congressional committee, said that the DCC "immediately took action" after the hack was discovered and brought in a forensic investigator to address the incident, The New York Times reported.

'Anything's possible' — Obama points to Russia on DNC hack

The newspaper, quoting an official involved in the investigation, said the attack appeared to come from an entity known as “Fancy Bear,” which is connected to the GRU, the Russian military intelligence service. The same entity was also implicated in the hacking of the DNC.

The FBI and the Justice Department are investigating the latest intrusions, which also include the committee, CNN and Reuters reported Friday, citing law enforcement officials.