State police say 44-year-old Jamie Baker was arrested on Thursday and charged with first-degree murder in the death of her husband, 42-year-old James Baker.
James Baker died in September. An autopsy revealed he had a chemical found in antifreeze in his system, and his death was ruled homicide by poisoning.
Following his death, police found syringes and liquid steroids in his home. Police say he had ordered the steroids through the Internet.
Police searched the home again on Thursday, and police say Jamie Baker told officers that she had used a hypodermic syringe to extract antifreeze from a bottle and then injected it into her husband's bottles of steroids.