Alas, Elder Zhao was merely at the Divine Transformation level, while among the demon cultivators present there were several at the Void Refinement stage, not to mention that quite a few of them were conveniently positioned right in front of his escape route.
It seemed he was only a few steps away from the cave entrance, just a breath's time from leaving this place, but in reality, Elder Zhao had no chance of leaving alive!
The other demon cultivators wore a look of glee upon seeing his attempt to escape, for it certainly confirmed that he was the cultivator sent undercover!
They had all been deceived by him, leading to the failure of their mission.
In this way, they wouldn't have to bear too much responsibility, and any punishment they faced would be significantly reduced.
As for excuses?
At the time Elder Zhao tried to flee, they "accidentally" went too far, directly killing him.