People.com Crime Mich. Man Allegedly Killed Wife Who'd Recently Given Birth by Putting Heroin in Her Cereal Christina Ann-Thompson Harris gave birth weeks before her alleged killing By Chris Harris Chris Harris Twitter Chris Harris has been a senior true crime reporter for PEOPLE since late 2015. An award-winning journalist who has worked for Rolling Stone and MTV News, Chris enjoys prog rock, cycling, Marvel movies, IPAs, and roller coasters. People Editorial Guidelines Published on August 28, 2019 11:32 AM Share Tweet Pin Email Photo: Facebook It has been nearly five years since Christina Ann-Thompson Harris died from what Michigan officials initially suspected was an accidental heroin overdose. This week, prosecutors say her death was no accident. At a press conference Tuesday, Genesee County Prosecutor David Leyton announced that Jason Thomas Harris, 44, had been detained on charges of first-degree premeditated murder, solicitation of murder and delivery of a controlled substance causing death. According to investigators, Harris spiked his 36-year-old wife’s cereal back on Sept. 29, 2014 — poisoning her with heroin after attempting to hire a hitman to kill her, Leyton explained. “We believe Jason Harris murdered his wife,” Leyton told reporters. “We believe he put heroin into her cereal and milk the night that she died after getting it from someone, thinking it would be tasteless and odorless much like he had asked his coworkers multiple times.” Weeks before her death, Christina gave birth to the couple’s second child. The Genesee County Medical Examiner’s Office determined her death was caused by an accidental heroin overdose. But police continued to look into her death, and in time, they say they uncovered information regarding Jason’s alleged attempt to retain the services of a professional killer. Police allegedly obtained information showing her husband, 44-year-old Jason Thomas Harris, allegedly tried to hire a hit man to kill her and eventually fed her cereal poisoned with heroin. Leyton told reporters that, in the wake of Christina’s death, detectives were approached by some of Jason’s co-workers, as well as his own siblings. All alleged they had heard Jason complaining about his wife in the weeks before her death, and that he’d even allegedly mused about “getting rid of her.” Christina with Jason Harris. Facebook Leyton also claimed that, before she died, Christina spoke to a friend about Jason and issues they had been having. “She told a friend that if something happens to me, look at Jason,” Leyton said at the press conference. Some of Jason’s friends as well as some of the couple’s neighbors alleged they saw him with other women. • Want to keep up with the latest crime coverage? Click here to get breaking crime news, ongoing trial coverage and details of intriguing unsolved cases in the True Crime Newsletter. Authorities tested some of Christina’s breast milk to determine if she had been regularly using heroin, but found no traces of the drug. Last week, the medical examiner’s office amended Christina’s death certificate, updating the cause of death to homicide. It was unclear Wednesday if Jason Harris, who remains behind bars, has a lawyer who could speak on his behalf. PEOPLE was also unable to ascertain whether Harris has entered pleas to the charges against him.