Brad's - Heartbreak OVER PAX

The actor fights to see his son after he's involved in a horrific accident

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He wasn't wearing a helmet and witnesses feared he was dead. On July 29, Angelina Jolie and Brad Pitt's son Pax crashed his electric bike into the back of a car at a red light near his mom's LA home during rush hour.

He injured his hip and suffered a serious head injury reports confirmed a brain bleed. "His mouth was filled with blood," Lola Cavalli, who rendered medical aid to the 20-year-old "right in the middle of an intersection" until paramedics arrived, says of the harrowing scene.

Pax was hospitalized and spent a week in the ICU. Reports soon emerged that he'd suffered complex trauma and faces a long road of recovery and physical therapy. While his mother, 49, and siblings, Maddox, 23, Zahara, 19, Shiloh, 18, and twins Knox and Vivienne, 16, have been by his side, a source says his heartbroken father, 60, has been kept away. "Brad is devastated by what happened," says the source.