Mandatory Credit: Photo by Press Eye Ltd/REX/Shutterstock (3731603o) Martin McGuinness attends the unveiling of a new mural of Gerry Adams New mural of Gerry Adams with the slogan 'Peacemaker, leader, visionary' unveiled, West Belfast, Northern Ireland, Britain - 03 May 2014 Gerry Adams is currently being questioned by detectives investigating the murder of Jean McConville