The former vice president was asked by NBC’s Chuck Todd whether Sanders bore any responsibility after a group of his supporters were accused of threatening members of Nevada’s powerful Culinary Workers Union for not supporting the Vermont senator’s “Medicare for All” proposal.

“He may not be responsible for it, but he has some accountability,” Biden said during the interview that will air on NBC’s “Meet the Press” on Sunday. “If any of my supporters did that, I’d disown them. Flat disown them.”…

Biden, who was once viewed as the odds-on favorite to win the union’s endorsement before heavy losses in Iowa and New Hampshire, said it wasn’t sufficient for the campaign to just “disassociate” itself from the attacks.

He made an impassioned pleas to Sanders to “find out who the hell” the supporters were and to investigate whether they’re working on or are employed by the campaign.