A San Francisco couple whose teenage daughter was allegedly being pimped by a Southern California man tracked him around the state, failing at one attempt to kill him before shooting him to death near Candlestick Park, authorities said Wednesday.

Attorneys for the couple say that they tried everything to rescue their daughter from Calvin Sneed, a 22-year-old alleged gang member from Compton (Los Angeles County), but that they didn't kill him.

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Eventually, they found out that the girl and Sneed were in North Hollywood, San Francisco police Officer David Nakasu said in the criminal complaint. On May 27, someone fired a 9 mm pistol into Sneed's car, and police believe that it was either Gilton or Mercado.

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On June 4, Sneed was in San Francisco, driving his Toyota Camry at Meade and LeConte avenues at 2 a.m., when someone - prosecutors say it was Gilton - shot him with a .40-caliber handgun. Sneed crashed into a parked car and died a short time later at San Francisco General Hospital.