He has been hacking for quite a long time already, other than using invisible hacks, he also used a script to hide his profile from the playerlist. I'm quite sure he can tp to people as he went from one side of the map to the other and killed both sides.
Involved Player(s): Arduous, Blackburn and ?
Offense: ? was hacking.
Server: [EU] Freezzer #SANDBOX #2-6 [/i|/v|/save|/load] [VAC Secure + BattlEye Required]
Time: Singapore time about 11:40.
Evidence:https://cdn.discordapp.com/attachments/314065616451403776/314065637167202305/20170516174321_1.jpg