MORE MEL...

The National Enquirer has a learned a few things about Mel Gibson's fateful night:

"Mel grabbed a bottle of vodka from behind the bar, poured himself a drink - and filled an empty water bottle with the clear booze," said an eyewitness.

"Then he started sipping out the water bottle. Everyone thought it was just water. It was straight vodka!"

The secret reason Mel finally snapped is that his downfall began in the months before, when the immense pressures of filming "Apocalypto" is sweltering Mexico, reduced Mel to a pathetic drunk, who talked to himself, fought with his crew and developed a disturbing nervous tic, reveal eyewitness to his public unraveling.

"The bottom line is that Mel went crazy in the jungle," an insider told the Enquirer. "The combination of the blistering heat, torrential rain and an over-budget and behind schedule film sent Mel around the bend.

He constantly fought with the cast and crew. He showed up on the set disheveled, confused and talking to himself.

He was drinking heavily at night.

He began to elude his security guards and take off.

They'd find him hours later dancing the mambo at local cafes - drunk as a skunk."