DOWNEY, Calif. -- A suspect was in custody after being arrested Friday in the killing of three people and wounding of two others in suburban Los Angeles, authorities said.

Jade Douglas Harris, 30, had been detained and questioned Thursday after a stolen black Camaro was found in Los Angeles, about 20 miles north of suburban Downey, where the shootings occurred.

Harris was booked Friday on charges of murder and non-negligent manslaughter, according to a review of Downey Police Department records by the Los Angeles Times. Jail records show that Harris was held in lieu of $1-million bail.

Police haven't given a motive but said they don't believe the killings were a random act of violence.

The three people killed were Josimar Rojas, 26, Irene Cardenas, 35, and Susana Perez-Ruelas, 34. The two injured were Perez-Ruelas' 13-year-old son and a middle-age woman.

The suspect had gone to the shop Wednesday after responding to an ad on Craigslist for the Camaro, said Martha Zerehi, a spokeswoman for the business.

After killing two and wounding another at a Downey business, the gunman grabbed Perez-Ruelas and her son Antonio and took them to the nearby family home, where the Camaro was, Zerehi said.

She said the gunman threatened to kill the boy. Perez-Ruelas pushed the gunman "really hard and out of rage, he killed her in front of the boy and then shot the boy," Zerehi said.

The boy played dead or unconscious and the gunman fled, she said.

Records show the business is registered to Robert Salinas and the home where the second shooting took place is owned by his brother, Antonio, who is Perez-Ruelas' husband.

Arshak Bartoumian, a lawyer for the family, said at a news conference that the shootings were not drug-related, and the family wanted to clear the air following false media reports.

  • DOWNEY, CA - OCTOBER 24: A home owner looks at police standing in front of two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Neighbors wait for police to clear the area after a shooting at a fire protection business and a home nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: A family member of an employee at a fire protection business waits for information following a shooting at the business and at a nearby home killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside a fire protection business after work place shooting and at a home nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Lt. Dean Mulligan (C) of the Downey Police Department speaks to his investigators after a workplace shooting and second shooting at a nearby home killing three people and wounding two others, including a 13-year-old boy on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Family members of an employee at a fire protection business seek information from Downey Fire public information officer Jason Patao following the shooting at the business and at a nearby home killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: A home owner looks at police standing in front of two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside a fire protection business after work place shooting and at a home nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Lt. Dean Mulligan of the Downey Police Department speaks during a news conference after a workplace shooting and second shooting at a nearby home killing three people and wounding two others, including a 13-year-old boy on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)

  • DOWNEY, CA - OCTOBER 24: Police stand outside two story house after a shooting and at a fire protection business nearby killing three people and injuring two others on October 24, 2012 in Downey, California. Police are still searching for the gunman who stole a car and escaped. (Photo by Kevork Djansezian/Getty Images)