The committee leaders added in their statement that they have already begun to receive documents related to the investigation, while warning incoming Trump Administration officials that they expect them to "fully and promptly support our requests for information related to the inquiry. It will not be adequate to review these documents, expected to be in the thousands of pages, at the agencies".
And Senate Armed Services Committee Chairman John McCain said his committee in the next week or two will launch its official investigation into how best to deter and counteract cyberthreats posed by countries such as Russia.
He plans to hold at least one full committee hearing, calling on officials such as Admiral Michael Rogers - the director of the National Security Agency and the head of US Cyber Command - to testify.
Republican leaders are not promising a quick turnaround.
Burr surmised that it would take months to "aggressively" comb through all the intelligence pertaining to the suspected hacking, given that the scale and extent aren't yet clear. And Republican leaders are clearly waiting on the intelligence panels to take the lead.