A video of former National Security Adviser Michael Flynn encouraging “lock her up” chants at the Republican National Convention in July resurfaced Tuesday following his resignation from the White House.

“We do not need a reckless president who believes she is above the law,” Flynn told the convention crowd in Cleveland. “Lock her up, that’s right,” he said, applauding chants from the crowd about then-Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonWoman behind pro-Trump Facebook page denies being influenced by Russians Trump: CNN, MSNBC 'got scammed' into covering Russian-organized rally Pennsylvania Democrats set to win big with new district map MORE.

“I have called on Hillary Clinton to drop out of the race because she — she put our nation’s security at extremely high risk with her careless use of a private email server," he said.

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“If I — a guy who knows this business — if I did a tenth of what she did, I would be in jail today,” he added.

Twitter users dug up the speech following his resignation Monday night. Flynn resigned after reports surfaced that he misled senior White House officials — including Vice President Mike PenceMichael (Mike) Richard PenceNorth Korea canceled secret meeting with Pence at Olympics Judicial order in Flynn case prompts new round of scrutiny The CIA may need to call White House to clarify Russia meddling MORE — about his communications with Russia.

Some critics of Flynn claim he broke the law by allegedly discussing Obama-era sanctions against Russia with the ambassador to Russia before Trump was sworn into office.

In a statement on his resignation, Flynn said the “fast pace of events” caused him to provide “incomplete information” to Vice President Pence and other senior officials about his communication with Russia.

The Department of Justice, then led by acting Attorney General Sally Yates, who was later fired, had reportedly warned the White House about risks Flynn posed to the administration, citing possible vulnerability to blackmail by Russia one month ago.