Washington: A US-based cyber security firm claimed that it has found strong evidence of links between the Russian military intelligence and the group which hacked the online portal of the Democratic National Committee (DNC).
DNC had hired cyber security firm CrowdStrike to probe the hack.
The firm reportedly found evidence of a malware used by the Ukrainian army against pro-Russia separatists with the malware used in the DNC intrusion.
The firm believes Russia's military intelligence agency GRU to be one of the two hacker groups involved in the DNC hack, ANI reported.
"Now we have high confidence, it was a unit of the GRU," the report quoted CrowdStrike co-founder Dmitri Alperovitch as saying.
The FBI is said to be privately in congruent with the findings of CrowdStrike.
The evidence points how different arms of the Russian government are carrying out such types of cyber acts in the United States, the report said.
Washington has accused Russia of interfering in the US election.
The GRU is reportedly used for tactical intelligence collection on the battlefield.
The other group that hacked the DNC also works for Russian intelligence, CrowdStrike said.