100 drugged, raped in fake clinical study

Japanese police have arrested a man for allegedly drugging and sexually assaulting more than 100 women who believed they were taking part in a medical study, detectives and local media said on Tuesday.

Detectives said scores of women responded to adverts seeking volunteers for "clinical research measuring blood pressure during sleep" over two years to November 2013.

They believe Hideyuki Noguchi, 54, gave the women sedatives after luring them to hotels and hot spring resorts.