LARIMER COUNTY, Colo. — A Milliken woman has been found guilty of killing a Fort Collins resident after selling him fentanyl earlier this year.
The investigation into Brittney Mortimer began in February, after Fort Collins Police Services conducted a welfare check on Edward Dzienowski at the request of his family. The man was found dead inside his apartment, and the cause of his death was determined to be fentanyl overdose.
Investigators eventually determined Mortimer had been selling him drugs, including on the day he was killed, according to a news release…