Alva Review-Courier -

An Oklahoma doctor was charged Friday with second-degree murder in the overdose deaths of at least five patients from the powerful painkillers and other drugs she prescribed, often in combinations that made up an addict's "holy trinity" of pills, state investigators said.

Oklahoma's attorney general announced five second-degree murder counts against Regan Nichols, whose patients died while she worked at a Midwest City clinic. An Oklahoma County judge also issued a warrant for her arrest.

Nichols is among several doctors who have been criminally charged or sentenced to prison in the overdose de...