'Road Rage' Shooting: The Adjusted Timeline

— -- As Las Vegas police work to identify a suspect in the apparent “road rage” shooting that left a mother of four dead, authorities are also struggling to draw an accurate picture of what happened.

The adjusted timeline of events is largely based on the accounts of the daughter and son who were in the car with the victim, 44-year-old Tammy Meyers, according to Lt. Ray Steiber of the Las Vegas Metropolitan Police Department

"What I think everybody wants is an accurate timeline and an accurate depiction of what occurred," Steiber said at a news conference Tuesday.

Here is what we know so far:

Thursday, Feb. 12: Police now believe that after Meyers and her 15-year-old daughter finished a driving lesson in a school parking lot, Meyers drove home. When a car pulled up aggressively behind Meyers and tried to pass, Meyers' daughter reached over and honked the horn, police say.

“Meyers sped past the male, and she continued on her way,” Steiber said. "Mrs. Meyers is scared, she’s upset.”

Meyers drove home and asked her daughter to tell her son, 22-year-old Brandon Meyers, who was armed, to come out to the car, Steiber said. Tammy and Brandon Meyers went looking for the "road rage" suspect and found him, before losing track of him again, Steiber said.

When the mother and son returned home, Steiber said, the suspect's car pulled up. Gunfire erupted and Meyers was fatally wounded.

"All indications ... are that this unknown person had fired shots first," Steiber said, adding that the son returned fire.

Saturday, Feb. 14: Meyers died at the University Medical Center of Southern Nevada.

Steiber said the homicide division then took over the case from the violent crimes section.

Tuesday, Feb. 17: A candlelight vigil was held outside Walter Johnson Junior High School, where Meyers had been giving her daughter the driving lesson the night of the shooting.

The daughter said at the vigil, "I was in the car with her. There's so much I can say about my mom. My mom was protecting me that night and she was doing what any mom would do. She was my everything, my best friend. She did everything she could possibly do to protect me and I love her so much."

Brandon Meyers said at the vigil, "I did what I had to do to protect my family. And I'd do it for anyone I love.”

The suspect, who has not been identified, was described by police as a white male, about 25 years old, who stands at 6 feet tall and weighs 180 pounds. He has "dirty blonde hair worn in a spiked style and has hazel or blue eyes," police have said. The suspect's car is described as a four-door silver or grey sedan.

Police are still reviewing the timeline and other aspects of the case.

ABC News' Michael S. James, Susanna Kim and Kendis Gibson contributed to this report.