(CNN) Oxfam’s chief executive will step down at the end of the year over a sex abuse scandal involving the British charity’s workers in Haiti.

Mark Goldring, who has led Oxfam since 2013, said Wednesday that “the time is coming for a new leader” to allow the organization to start afresh.

Oxfam was rocked by allegations made in February that a number of its staff members, working in Haiti following the 2010 earthquake, hired prostitutes at the charity’s properties there. Among the employees was Oxfam’s Haiti director.

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