. >> reporter: 32-year-old kenneth franklin shinzato, an american contractor and former marine, allegedly raped and murdered 20-year-old rina shimabukuro on the island of okinawa, site of a major u.s. military base. thus of protesters have taken to the streets, some calling for the closure of all u.s. bases in japan, where more than 50,000 u.s. troops are stationed. charlie, this casts a shadow over a trip that was meant to strengthen ties between the two countries. later this week, mr. obama will be the first american president to visit hiroshima, a city that was devastated when the u.s. dropped a nuclear bomb there during world war ii. >> rose: thanks, margaret. tonight we continue our investigation of the opioid epidemic, which is taking more than 80 lives a day. west virginia, which leads the nation in overdose deaths, is fighting the epidemic in court by suing six national companies that distribute painkillers. here's jim axelrod. >> reporter: this is what the opioid crisis looks like in west virginia. people addicted to pain pills lining up on foot and in cars at a small-town drugst

kenneth franklin shinzato is a civilian who works on kadena air base. police say information from the suspect led them to the body of rina shimabukuro, whose body was lying by the side of the road. police say the suspect confessed to attacking the woman and abandoning her body. sources close to the investigation say officers found the victim's blood stains in his car. residents have long complained about crimes committed by base personnel. more than 70% of u.s. military facilities in japan are in the okinawa prefecture. >> translator: this is unforgivable. i am lost for words. >> translator: incidents like this will happen as long as we have the bases. >> japan's prime minister voiced his anger. >> translator: i demand that the u.s. respond in a strict manner to absolutely make sure similar incidents do not happen again. >> officials say the prime minister plans to discuss the matter with the governor of okinawa who will visit tokyo on monday. the head of the u.s. forces in okinawa visited the local government to apologize. lawrence nicholson said that,

last week police in the southern prefecture of okinawa arrested kenneth franklin shinzato after he admitted strangling a woman. general nakatani lodged a protest with defense detective ash carter. carter hoped the perpetrator will be held responsible under the japanese legal system and apologized. >> translator: we are discussing with the u.s. ways to prevent incidents like this from happening again. >> japan's minister in charge of okinawa affairs also spoke about the incident. she has indicated she'll seek a revision to the status of forces agreement. the pact includes rules governing crimes committed by u.s. military personnel and civilian employees. she said the current agreement could stand in the way of bringing people suspected of such heinous crimes to justice. >>> an international human rights group is accusing the chinese government of intensifying surveillance in tibetan villages and detaining people unjustly. a report by new york based human rights watch highlights the cases of 479 tibetans. the report says the chinese government has expanded surveillance to communities outside

everything that we can to prevent any crimes from taking place of this sort. 32-year-old kenneth franklin shinzato, allegedly raped and murdered a woman on the site ok. thousand of protesters have taken to the streets calling for the closure of all u.s. bases in japan where 50,000 u.s. troops are stationed. charlie this cast a shadow over a trip meant to strengthen ties between the two countries. later this week, mr. obama will be the first american president to visit hiroshima, a city devastated when the u.s. dropped a nuclear bomb there during world war ii. >> thank you, margaret. tonight we continue our investigation of the opiate epidemic which is taking more than 80 lives a day. west virginia which lead the nation in overdose deaths is fighting the epidemic in court by suing six national companies that distribute painkillers. here is jim axelrod. >> reporter: this its what the opioid crisis looks like in west virginia. people addicted to pain pills lining up on foot and in cars at a small town drugstore to get their prescriptions filled. >> in 2014, almost 19,000 people died of an opioid over

. >> reporter: 32-year-old kenneth franklin shinzato, an american civilian contractor is suspected ofstrangling a 20-year-old woman in ok that wa. the alleged murder sparked protests on the island where the u.s. maintains a large military presence. president obama extended his condolences and promised the u.s. would cooperate in the investigation. >> the united states is appalled by any violent crime that may have occurred or been carried out by any u.s. personnel or u.s. contractors. we consider it inexcusable. >> reporter: the president is in japan meeting with world leaders at the g7 summit. terrorism, maritime security and the global economy are on the agenda. tomorrow, he will make history in hiroshima when he becomes the first american president to visit the site where the u.s. dropped an atomic bomb during world war ii. president obama won't apologize for the decision to drop the bomb more than 70 years ago but will use his speech to make a case for hiding the world of nuclear weapons. diane and kendis? >> thank you. >>> authorities are trying to determine what caused a suspect