Oscar Velazquez, a 22-year-old Hispanic truck driver from Chicago, was murdered on June 6, 2000. His white Camaro was reported missing and later found gutted and torched on the south side of Chicago; witnesses said two girls had been seen driving the vehicle.

Investigators tied Velazquez to 17-year-old Regina DeFrancisco through phone records showing contact shortly before his death. Regina and her 16-year-old sister Margaret were alleged to have lured him to the DeFrancisco home in Pilsen, shot him, and fled; both became fugitives for nearly two years. Margaret was arrested in Rockford in March 2002 after a tip following a television broadcast, and Regina was captured later in Dallas after a high-speed chase. Their friend Veronica Garcia, who reportedly supplied the gun, testified against them in exchange for a lesser charge.

Both sisters were tried starting in July 2004 on first-degree murder and unlawful flight charges and were convicted. Does anyone have further details about the investigation, witnesses, or the locations involved?