Hillary Clinton violated debate rules in last night's duel in Miami, according to the Bernie Sanders campaign.

There are rules not allowing candidates to talk with their staff during breaks in the debate. And a photo posted by Fox News reporter Ed Henry shows Clinton surrounded by aides during one of the breaks.

Sanders aide Jeff Weaver told me photo circulating of @HillaryClinton w/staff during debate break violates DNC rules pic.twitter.com/CYeowyNI7y — Ed Henry (@edhenry) March 10, 2016

"Sanders aide Jeff Weaver told me photo circulating of @HillaryClinton w/staff during debate break violates DNC rules," Henry tweeted.

In a follow up tweet, Henry got comment from Clinton campaign.

"Candidates are not supposed to confer w staff during commercial breaks -- Clinton aide Jen Palmieri told me she wasn't aware of pic," Henry tweeted.