Thirteen South Sudanese soldiers have gone on trial accused of raping foreign aid workers and murdering their local colleague. The incident in the capital, Juba, last July resulted in a UN report which accused UN peacekeepers of failing in their duty to protect civilians. It happened as rival forces in the civil war clashed in the city. The soldiers’ lawyer said the allegations were untrue, Reuters news agency reports. The incident happened in a rebel-controlled area, he added. Peace efforts have failed to bring an end to the three-and-a-half-year-old conflict, which has seen forces loyal to President Salva Kiir fighting troops who back former Vice-President Riek Machar. Between 50 and 100 soldiers entered the compound, looted the place and then raped five women, he is quoted as saying. The defence lawyer says the compound was in a rebel-held part of the city, implying that government troops could not have been responsible.