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Devastated family members came to the scene with flowers and candles and pleaded with the hit-and-run driver to turn himself in.
"It's hard for us because we have to notify his dad and mom, and they're in Mexico," said Eduardo Jimenez, the victim's brother-in-law.
Pompa was struck as he was crossing the intersection of Satsuma Avenue and Vanowen Street just after 2 a.m.
"We know that the person who was driving knew that there was an impact because obviously it was quite a violent impact, and unfortunately that person didn't stop," LAPD Det. Bill Bustos. "So we want to hear his or her side of the story of what occurred."
Police said another motorist noticed a man's body in the street and called 911.
"That person drove by, saw somebody lying on the street, stopped, called 911, approached, and tried to render some aid, but unfortunately, it was too late," said Bustos.
Pompa was pronounced dead when paramedics arrived.
The victim lived in the area, but it's unclear where he was going at the time he was struck.
Despite the violent collision, detectives say there was little evidence at the scene. Police do not have a description of the suspect or the suspect's vehicle. They're hoping surveillance cameras on a self-storage building and a church caught the accident on tape.
Detectives say the suspect's vehicle likely has fresh front-end damage to the hood and possibly to the windshield.
The victim's family and police asking for the public's help. Anyone with information is urged to call (877) LAPD-24-7, or (877) 527-3247.