Toxicology tests have confirmed that two Pasco residents died of drug overdoses last month, Franklin County Coroner Dan Blasdel said.
After having four possible overdose deaths in about two weeks, Blasdel said he thought tainted drugs might be circulating in the area.
Toxicology results, however, show two of the deaths do not appear to be related, he said.
Molly Michelle Westenkow, 29, was found dead in her home March 24. She died of a morphine overdose, Blasdel said Thursday.
Erick M. Liera, 18, died March 27. He died after overdosing on methadone.