God Aurora, guardian of the heaven entrance was murdered! Who or what could have done it...?

Her injuries: Bashed in head, stab wound to abdomen, internal bleeding...

Suspects: Any Gods because the only way to kill a god would be for another god to kill them...

Gods hat are known: Primus, Unicron, Megatron, Starscream, Mia, Hazel, Bee, and Optimus.

Main suspect(s): Starscream or Megatron