A Los Angeles jury has convicted a doctor of killing three patients who overdosed on painkillers she prescribed.
Dr. Hsiu-Ying "Lisa" Tseng was convicted on Friday of second-degree murder.
The rare prosecution of a doctor on murder charges came after a dozen of Tseng's patients died during an epidemic of prescription drug abuse.
U.S. & World
She was only charged with three killings because other factors were involved in some of those deaths, such as drugs prescribed by other doctors and a possible suicide.
Tseng's lawyer claimed the doctor had been naive to prescribe so many medications and didn't think her patients would abuse the drugs.