The boy's mother and infant sister, also critically injured in the accident, remain in critical condition.
Adult attorney Michael Fattorosi, who is representing Barnes, told XBIZ that he will have more information after a bail and arraignment hearing this morning.
Barnes and 19-year-old Armando Gamboa Ayon were booked for attempted murder after the accident occurred, and LAPD Officer Sandra Gonzalez said both are being held on $1.5-million bail.
LAPD Capt. Ronald Marbrey told KNBC that witnesses reported two cars, one driven by Barnes and the other by Ayon, were "jockeying for position" traveling between 50 and 90 miles per hour on residential streets in the San Fernando Valley at 3:12 p.m. Tuesday.
“They were cutting each other off,” Marbrey said. “At one point further down the roadway, the red Camaro [Barnes' vehicle] slammed on his brakes and the black Nissan [Ayon's vehicle] barely missed colliding with him.
“Further down the road, here at Amestoy (Ave.), the red Camaro applied the brakes hard, the black Nissan attempted to avoid a collision and swerved to the right, and collided with a silver Daewoo.”
The Daewoo subsequently slammed into the family, pinning them against another car.
Ayman Arif, 5, died about 11 p.m. last night at the Mattel Children's Hospital at UCLA, said Kevin Maiberger, a spokesman of the Los Angeles Police Department.
LAPD Officer Jason Lee told the Associated Press that his mother, Syeda Arif, has lost one leg, and doctors are trying to save the other, which was crushed in the accident.
Barnes has been active in the adult entertainment industry since 1998 and has appeared in more than 1,000 movies, according to IAFD.com.