Opioid prescribers face murder charges

Prosecutors in the US state of Florida are cracking down on doctors who prescribe opioids to known abusers.

Two doctors are being tried in separate murder cases after four patients died of overdoses.

Dr Hsiu-Ying “Lisa” Tseng, a Los Angeles doctor, is facing three counts of second degree murder over the deaths in 2009 of three male patients. He is also facing