What could be the cause of sudden Total oil pressure loss and knocking sound? on 1999 Chevrolet Blazer

Drove about 70 miles roundtrip when upon entering town had sudden Total oil pressure loss and knocking come from engine. NO previous leaks and oil levels fine when checked about one month previous to incident. Truck has been running Great before this...??????

Asked by for the 1999 Chevrolet Blazer
Any oil in it now?
Only what is in really no. Limped her home...barely (about 4 blocks)Don't dare try start back up...afraid might blow engine???
I think you already have damaged your engine!!!
was afraid of that! Any ideas what could be cause....just happened out of nowhere and had been running fine...
1 more answer
A break in the hose set that run to the remote oil filter assembly. Oil pumps out fast and the engine will cease.