CHESTERFIELD, Mo. (AP) — A nuclear physicist who died suddenly last summer was poisoned with a huge dose of arsenic, investigators said Monday in ruling the case a murder.
Police in this St. Louis suburb disclosed the results of toxicology tests on 67-year-old John Mullen, who died June 29, hours after complaining of an upset stomach at his home.
Capt. Ed Nestor refused to discuss any possible suspects or a motive in the death.
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Nestor said Mullen, who had been divorced for many years, largely lived alone but was letting a girlfriend's daughter stay with him at the time he fell ill.