As i was walking with someone i know in our way to the Masjid, he talked about Bin Ladin then he said, we ask Allah for him to be martyr. I was speechless and i didn't know how to respond.
We don't know the details of what he did and what he didn't. We just know that Muslims were killing other Muslims because of his takfiri ideology for all Muslims who disagreed with his causes.
Now he is in the hands of Allah, the most just.
And responding to your OP Sahar, i think he is neither mujahid nor criminal. He is just like some Muslims of the past who thought they were right and killed other Muslims for it. It's up to Allah to judge who was right and who was wrong, but from what we have seen of his followers actions, it's against Islam's teachings to kill innocent people. He was a fitnah, period.