A former CIA officer who helped investigate Russian election interference denied Director of National Intelligence Tulsi Gabbard’s claim that the Obama administration cooked up intelligence on Russia to undermine Trump’s 2016 election win.

U S National Intelligence Director Tulsi Gabbard launched a new attack on former President Barack Obama this week, alleging that he conspired to undermine Trump’s 2016 presidential victory by using false intelligence purporting to show Russian interference in Trump’s favour.

The long-simmering feud between President Trump and former President Obama erupted this week after Trump accused his predecessor of treason, a startling escalation in the fight between the two

Hours after Trump falsely accused Obama of trying to rig the 2016 election, the ex-president’s office said it had no choice but to publicly refute the claim.

The administration’s claims are overblown, but newly declassified information provides some messy details about a January 2017 intelligence assessment of Moscow’s election interference.

"We definitely had the intel," Susan Miller, who helped oversee the 2017 intelligence assessment of Russia's efforts in the 2016 election, told NBC News.