Michael Jackson Burial Triples in Price

The Jackson family's decision to move Michael's burial from a Saturday to a Thursday is gonna cost some serious dough -- at least three times the original price!

According to the Glendale police, the cost for the weekend service would have ran about $50,000 -- 90% of which goes to police handling street closures, security and perimeter control.

But officials say the Jackson family will now have to fork over "at least triple the price" to contract the cops for a weekday burial.

As for the cemetery, we're told it will be on total lockdown -- with security patrolling from the ground and from the air. At least one police chopper will be keeping an eye from the sky.

And just to prove the cops mean business, Sergeant Tom Lorenz is warning uninvited fans, "Don't even try and come, because you won't even be able to see the green of the Forest Lawn."