DEA and state authorities serve a search warrant on the Rowland Heights office (second floor) of Dr. Lisa Tseng. Some of her patients traveled great distances to get painkiller prescriptions from Tseng. (Irfan Khan / Los Angeles Times)
Dr. Lisa Tseng, 40, an osteopath, has not been charged with any crime. She says her patients who died did not follow her dosing directions. (Irfan Khan / Los Angeles Times)
