LOS ANGELES (KABC) -- Los Angeles police say they've arrested four people in the shooting death of a developmentally disabled teenager outside a South Los Angeles car wash last month.Kanasho Johns, 27, was arrested in Houston, Texas and is believed to be the shooter. Dwight Smith, 30, Kevin Johnson, 25, and Antheyst Jarrett, 27, were also arrested in connection to the shooting, LAPD officials said.Smith and Johnson were both charged with one count of murder. Smith pleaded not guilty and was scheduled to return to court for a preliminary hearing setting on July 6. Johnson's arraignment was continued to July 6.Jarrett faces one count of dissuading a witness from testifying and one count of accessory after the fact. Her arraignment was scheduled for July 2.The district attorney's office declined to confirm charges for Johns.On May 29, Tavin Price was shot to death outside a car wash near the corner of Florence Avenue and Crenshaw Boulevard after a suspect made comments about his red shoes."Tavin was not a gang member. Tavin was just wearing red shoes that day at the car wash," LAPD Det. Christopher Barling said.Investigators believe the color, which is associated with a specific street gang, angered the gunman.The 19-year-old was shot four times in the back and chest. He was transported to a local hospital, where he later died.The Los Angeles City Council is expected to approve a $50,000 reward in hopes more witnesses will come forward.