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A Redmond father suspected of giving his 4-year-old son heroin has been booked into jail for investigation of attempted murder.

Eric Lehtinen's wife discovered him and the boy unconscious at their home on Tuesday, and they spent several days sedated at a hospital. Police said it appeared the 37-year-old had injected his son and himself with heroin.

Probable cause documents said medical staff at Children's Hospital found puncture wounds on the child indicating recent needle sticks. An initial toxicology screen of the boy's blood showed the presence of heroin, ketamine, morphine, codeine, norketamine and lidocaine.

Documents say Lehtinen has a long history of drug use and overdose occurrences.

Lehtinen was booked into the King County Jail late Friday night. He was ordered held on $3 million bail.

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