Police examine the scene where the Wilborns' vehicle crashed. (Irfan Khan / Los Angeles Times)

Sulema Wilborn was driving with her husband, Jerriell Wilborn, along Slauson Avenue in South Los Angeles in August when police said an attacker fired a gun for no apparent reason and fatally wounded the couple.

On Thursday, authorities are scheduled to offer a $75,000 reward for information in the double slaying. The reward is sponsored by City Councilwoman Jan Perry, who represents the area, and will be announced at the Los Angeles Police Department's Newton station.

As she was shot, Sulema Wilborn accelerated and smashed her vehicle into a pole in the South Park neighborhood, police said. The couple was pronounced dead at the scene.

At least 35 homicides have been reported in South Park since January 2007, according to a Times Homicide Report database.

Anyone with information regarding the Wilborn slayings is asked to cal LAPD Newton Det. Luis Calzadillas at (323) 846-6556. Tipsters who wish to remain anonymous can call Crime Stoppers at (800) 222-TIPS (800-222-8477).