Major griefing to spawn and threats

I so happened to be online when a major grief attack came from 2 new players that were using speed hacks and fly mod as well as world edit. they created massive waterfall all over the spawn centre and down goofpotatos tower - thus lagging the server. Also during the process Mccg was minor girefing and threatening to hack other players and Doowithgun5 was threating also to crash and grief.

These are the players who I witnessed greifing and threatening: This can also be confirmed by minime35643

Toonbreth - Minor Griefing
Doowithgun5 - Minor Griefing and Crashing Threats
Mccg - Griefing and Account Threats
iSho - Speed Hacking and Griefing
Firefly47 - Major Griefing and hacking


I would really appreciate it if this situation could be resolved as the server is becoming overun with water and really lagging.