At the end of the day, we are not going to know if someone will be saved. We can see his future fruits and see whether or not it will be saved, it is clear... If he totally found Jesus, repent, and go against his old ways, great news! However, "faith" without repentance is no "faith" at all.
"A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit." (Matthew 7:18)