One of the three 'Neo-Nazi' soldiers suspected of being the Toulouse serial killer is today being questioned by police.The unnamed veteran, from the same regiment as two soldiers murdered last week, was one of those pictured giving Nazi salutes and draped in a Swastika flag.The man, in his 20s, gave The man, in his 20s, gave himself up for questioning at a gendarmerie in Toulouse 'first thing this morning'.