Both men were booked into the Pasadena Police Department Jail. Knowles was being held without bail, while Johnson s bail was set at $4.09 million.
The two men are scheduled to be arraigned Thursday at the Pasadena courthouse on attempted murder and other charges.
Officers were sent to the 300 block of Parke Street about 3 p.m. Feb. 14 on reports of shots fired and found the boy suffering from multiple, potentially life-threatening gunshot wounds, according to a police statement.
The preliminary investigation revealed that the suspects exited a late model, light-colored four-door sedan and fired multiple gunshots, striking Mario Ramirez, then jumped back in the car and sped off.
Family members said the boy, who they identified as 10-year-old Mario Gabriel Ramirez, was undergoing a second surgery and would likely need a third on Tuesday.