DOWNEY (CBSLA.com) — Police believe a 34-year-old man was shot and killed in Compton earlier this year because he was in a red car.

Tauruson McMillian was driving home around 6:30 p.m. Jan. 4 when deputies said several shots were fired into his vehicle.

READ MORE: Search For Missing Mother Heidi Planck Leads To Chiquita Canyon Landfill In Castaic

One of the bullets hit McMillian in the head.

Authorities believe the victim, who worked for the city of Pasadena, was targeted because of his red Chevy Monte Carlo.

Pam Adel, McMillian’s girlfriend of nine years, said she was on the phone with her boyfriend when the violence erupted.

READ MORE: Grandmother, 4 Children Shot And Killed In Lancaster Home; Father Germarcus David Arrested

“What I heard was like, a ruffling of paper, which I thought the phone had fallen between the seat. And I thought nothing of it,” she said.

Adel, however, soon learned McMillian had died. She said she was told her loved one was at the wrong place at the wrong time.

Adel said she will wear a ribbon every day until the person responsible for her boyfriend’s murder is brought to justice.

“He was just a loving person. Innocent man to be targeted this way. It’s not fair,” she said. “He was my partner, my other half.”

MORE NEWS: Kim Fields Hopes 'Adventures In Christmasing' Inspires People To Come Out Of Their Comfort Zone

A news conference will be held Wednesday about a $20,000 reward for information leading to the arrest and conviction of McMillian’s killer.