
Originally Posted by
Gradius
To be clear, I said Aldaris attacked the citadel, not that he attacked the dark templar first, but to answer your question, no, there is no evidence, but it couldn't have been Raszagal - that would have given away her disguise, just like lying about the attack would. Of course you can say that she sent some assassins or something, but that's completely unparsimonious - now we're just making up lore. I think it's obvious that the writers intended for Aldaris to have overreacted and attacked first.
Zeratul and Artanis could have easily reaffirmed Raszagal's words. It would not have served her to lie. Artanis was trying to figure out what was going on i.e. "aldaris has taken control of our templar warriors and arbiters, it is possible he may send archons against us."