Brad Pitt and Angelina Jolie's son fell victim to everyone's biggest fear -- the dreaded iPad heist -- after a man allegedly broke into the family's SUV and jacked not one, but TWO of the high-priced Apple tablets.
Sources on the scene tell TMZ, 11-year-old Maddox Jolie-Pitt, some friends, and a family bodyguard went to Hollywood Sports Paintball Park in Bellflower, CA, last weekend ... and while Maddox was playing inside, some jackass jimmied their SUV door and snatched the iPads and a cell phone.
But before the guy could make a clean getaway ... we're told someone spotted him in the act, and alerted security guards -- who nabbed him and then called police.
Our sources say the man was arrested, and the stolen items were returned.
A rep for the paintball park tells us, he felt so bad about the whole thing ... he hooked Maddox and his bodyguard up with a bunch of free food and other stuff.