The attack on December 26 left four members of the Iranian opposition dead and another 70 wounded.
Mr Moezi message’s from prison comes after political prisoners in Zahedan and Gohardasht prisons also sent similar messages of solidarity following the atrocity.
Paying tribute to the victims, Mr Moezi added: “The Iranian regime has stalled and is facing multiple crises at home and abroad, while the Iranian Resistance is enjoying more support from youths and the general population that is an obstacle to the sustainability of this regime.”