Iran stated that it needed to be. I know Israel/US said it isnt, but that isnt how a ceasefire works. All sides actually have to agree to the terms of a ceasefire to have a ceasefire.
https://www.axios.com/2026/04/08/lebanon-attacks-israel-iran...
So if both sides do not agree to that request it’s not part of the ceasefire, pretty simple.
I can't understand how it is possible that when such ceasefires are agreed there isn't a designated third party who has the signatures of both parties and can say, and prove, if it's been violated.