Update(0845ET): Iranian state media has confirmed that more that 70 were killed in two "terrorist attacks" at the cemetery where memorial anniversary events for the slain IRGC General Qassem Soleimani were being held in the southern city of Kerman.

"Babak Yektaparast, a spokesperson for Iran's emergency services, told state media that 73 people had been killed and 170 injured," according to Sky News. Wednesday marked the four-year anniversary of Soleimani's assassination.

Iran is meanwhile vowing to "punish the perpetrators of the Kerman explosions" according to state media.