Cheater in Sealed Cave Railor

First of all, i wanna say sorry, if i don't have any proof for what will i say after this, because, i saw him cheating yesterday, but i can't take a video, because he's too fast, and this night my friend is seeing him using that cheat again
The name of Character : Recruit (Warrior) Mook
Locations : Sealed Cave (Railor)
Level : 93
Time : 08:42 PM
Cheats : using a Speed Gear
my wish is.. Please band all cheater in this game, more over, identified how the cheat works, and create a way to avoid that program. the only reason why i play seal us, its only because its still clean, and i would be appreciated if you guys could handle this problem.
Thank you :)