(KRON) -- Investigators in Stockton have released surveillance pictures of vehicles suspected of being involved in the mass shooting of 17 people at a child's birthday party that left four dead in November. Youngest victims of Stockton mass shooting mourned The San Joaquin County Sheriff's Office as ked for the public's help to identify and locate the vehicles on social media Saturday. The blurry photos -- screen grabs of video images -- appear to show white or silver vehicles with no license plates visible. "There has been information coming in, but we're hoping this will get some more answers," sheriff's spokeswoman Heather Brent said in an interview. Brent said the two vehicles were found on surveillance video taken near the scene of the shooting in the 1900 block of Lucile Avenue on Nov. 29. The dead were 8, 9, 14, and 21 years old. Anyone with information that could help find those responsible could receive a reward of up to $130,000. The reward includes $55,000 from Stockton Crime Stoppers, $50,000 from the FBI, $20,000 from the Bureau of Alcohol, Tobacco, Firearms and Explosives and $5,000 from the Youth Peace Justice Foundation. Anyone with information on the vehicles or the suspects involved can send an anonymous tip by texting the letters SJSOTIP to 847411; visiting the Sheriff's Office's online TIP411 page; phoning the Sheriff's Office at (209) 468-5087 or calling Stockton Crime Stoppers at (209) 946-0600. ...read more read less