Conviction June 21, 1980 Homicide

Suzanne Bombardier

Suzanne Bombardier, 14, was abducted in June 1980 while babysitting at her sister's home in Antioch, California; a fisherman found her body in the San Joaquin River days later. She had been raped and stabbed. After a DNA match, Mitchell Lynn Bacom was arrested on December 11, 2017. A jury convicted him of first-degree murder on March 15, 2022, and he was sentenced to life without parole.

Status
Conviction
Type
Homicide
Date
June 21, 1980
Location
Antioch, California
Age
14
Gender
Female
Decade
1980s
Where the case stands
  1. Open
  2. Partly resolved
  3. Charges or trial
  4. ClosedConviction

At least one person was convicted in connection with the case.

Timeline to scale
Each dot is a dated event below; the distance between dots is elapsed time. The darker dot marks the incident.
June 21, 1980: Suzanne Bombardier disappears overnight from her sister's home in Antioch, where she was babysitting.June 27, 1980: A fisherman finds her body in the San Joaquin River east of the Antioch Bridge (date per Wikipedia).2015: The case is reopened and evidence is submitted to a forensic laboratory for DNA profiling.2017: A match in the FBI's CODIS database identifies Mitchell Lynn Bacom; further testing confirms it.December 11, 2017: Antioch police arrest Bacom, 63.March 15, 2022: A Contra Costa County jury convicts Bacom of first-degree murder with special circumstances.June 27, 2022: Bacom is sentenced to life in prison without the possibility of parole.1980202242 years from incident to latest development
California
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Suzanne Arlene Bombardier was a 14-year-old junior high school student in Antioch, California. On the night of June 21, 1980, she was babysitting her young nieces at the home of her older sister, Stephanie Mullen, in Antioch. According to Wikipedia's summary of local reporting, her sister came home at about 4 a.m. and found that Suzanne was gone. ABC7 News reported that the home was on Hudson Court.

Several days later a fisherman found her body in the San Joaquin River east of the Antioch Bridge. Wikipedia gives the date as June 27, 1980. According to the Contra Costa County District Attorney's Office, she had been sexually assaulted and had died from a single stab wound to the chest. The case was investigated by the Antioch Police Department and became the city's oldest open homicide.

No one was charged for 37 years. According to Newsweek, the investigation was reopened in 2015 at the urging of two retired detectives, and biological evidence was sent to a forensic laboratory so that a DNA profile could be developed. In early 2017 the FBI's Combined DNA Index System produced a tentative match, which further testing confirmed. On December 11, 2017, Antioch police arrested Mitchell Lynn Bacom, then 63, an Antioch resident who had been acquainted with the Bombardier family.

The District Attorney's Office has said that Bacom had been a suspect early in the original investigation, because he had earlier convictions for rape and other felonies and was on parole when Suzanne was killed. Newsweek reported that he was also convicted of further offences in the early 1980s and, in 2002, of failing to register as a sex offender.

Bacom stood trial in Contra Costa County. On March 15, 2022, a jury found him guilty of first-degree murder, and found true the special circumstances that the killing took place during a burglary, a kidnapping and a rape. That verdict carries a mandatory sentence of life in prison without the possibility of parole, which, according to Oxygen, was imposed on June 27, 2022, with Suzanne's sister addressing the court. No later appeal ruling was found in the sources consulted.

missing personteenager1980s
  1. June 21, 1980
    Suzanne Bombardier disappears overnight from her sister's home in Antioch, where she was babysitting.
  2. June 27, 1980
    A fisherman finds her body in the San Joaquin River east of the Antioch Bridge (date per Wikipedia).
  3. 2015
    The case is reopened and evidence is submitted to a forensic laboratory for DNA profiling.
  4. 2017
    A match in the FBI's CODIS database identifies Mitchell Lynn Bacom; further testing confirms it.
  5. December 11, 2017
    Antioch police arrest Bacom, 63.
  6. March 15, 2022
    A Contra Costa County jury convicts Bacom of first-degree murder with special circumstances.
  7. June 27, 2022
    Bacom is sentenced to life in prison without the possibility of parole.

About this entry

This case is recorded as conviction and is kept in the index for its historical and investigative significance. At least one person was convicted in connection with the case.

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Entry last updated September 29, 2026.