Police say a Washington man tried to kill his 4-year-old son by injecting him with heroin on the day his divorce was due to be finalized from the boy’s mother.

The child’s mother said she found Eric Lehtinen and their son lying unconscious Tuesday on a bed inside a locked Redmond home, reported the Seattle Post Intelligencer.

She removed a blanket to find a syringe apparently filled with drugs on her son’s chest, police said.

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Firefighters were unable to revive the man or his son at the home, but the 37-year-old Lehtinen has since been released from a hospital and jailed on an attempted murder charge.

Bond was set at $3 million.

The child remains hospitalized, and authorities aren’t sure whether he’ll suffer long-term damage from the drug overdose.

Investigators said they found puncture marks on his neck and buttocks, and police said he’d apparently been injected with heroin, ketamine, morphine, codeine and other drugs.

The boy’s mother had returned with her son from San Francisco to interview for a job in Seattle, police said.

She had allowed her son to stay with his father despite a request that any child custody order require drug tests, although the woman said Lehtinen told her he’d quit using drugs.

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Police said they found drugs, drug paraphernalia and more than $12,000 cash in Lehtinen’s home.

If convicted, Lehtinen could be sentenced to up to 15 years in prison.

[A man injects himself with heroin. Photo: Shutterstock.com]