I suspect a player is a bot

[Thois]

Hello,
I have suspicions on a player, i think he/it is a bot. Why?

This is why:
1) no chat
2) 8.9% VPIP
3) 8% pfr
4) checks and folds everything when he is a blind
5) only seems to play the monsters and plays it uber agressive
6) multi tables 6 tables
7) no variation whatsoever, same betting patterns when he has monsters

I dont think a human can play this uber tight, this must be a grinding bot i suspect. Btw, the player is on Pokerstars.

Are these points enough for a reasonable doubt? What can i do to become sure this is a bot?

Btw, i will not post his username, in case that im wrong.