HOUSTON --Two people killed in an accident on the Ship Channel Bridge over the weekend have now been identified. A local family is in mourning after a devastating crash killed two of their loved ones on Saturday. The victims were ejected from their vehicle and thrown over the guardrail of the Ship Channel Bridge. Today we learned one of those killed was an expectant mother. Houston police haven't said whether they've identified that driver who left a car behind. Presumably investigators are using the license plate number and any fingerprints they can find to try and locate whoever was driving. Inside the victim's home a single candle burns. The flame is representative of the grief their entire family now must endure. "It's just hard. A horrible death. I couldn't imagine the last seconds of their lives," said Edith Campos, a relative of the victim. Authorities say 34-year-old Luz Campos and her 13-year-old son David were killed Saturday in a crash in the 600 block of the East Loop South about 5:50pm. Police say the driver of a Chrysler Sebring made an unsafe lane change, striking the Astro van they were in and causing it to hit the concrete wall of the bridge. Upon impact, Campos and her son were ejected from the vehicle, over the edge of the bridge and onto the ground below. Police say they fell 120 feet. I can't imagine. I don't want to think about it," Edith Campos said. You can see Campos with her family, including her two sons and daughter, in a photo. Henry, 8, is still shaken. He was among four from inside the van hospitalized. He, his grandparents and younger sister have been treated and released. Police say the passenger and driver in the Sebring fled on foot. No one has been arrested. "They're cold; cowards. I cant believe they didn't stop and help. I hope that God forgives them because I know my family is not," said Edith Campos. Investigators are now looking for them. Police won't say if they have identified either. The Medical Examiner's Office says there is no cause of death yet for Luz Campos and David Campos. The investigation is continuing. Anyone with any information on the driver and passenger is urged to contact the HPD Vehicular Crimes Division at 713-247-4072.