Russian and Turkish investigators are working together to determine whether the assassination of Moscow envoy, Andrei Karlov, was the work of a lone gunman or part of a wider conspiracy. <br /><br /> Both countries which have taken opposing sides in the Syrian war have said they wont let the killing harm relations.<br /><br /> Meanwhile a spokesperson for Fethullah Gulen has dismissed allegations of a connection with the US-based Muslim cleric:<br /><br /> “This is a desperate effort, I think, on behalf of Turkish government to distract attention from the glaring security lapses surrounding the incident. Obviously the Russian-Turkish relationship, the Syrian crisis, under the circumstances, there must have been real strong security around him. So I think they’re trying to distract the observers from these glaring lapses,” said Alp Aslandogan.<br /><br /> Family members of the killer who has been identified as police officer Mevlut Mert Altintas, are among six people detained by Turkish security. <br /><br /> A senior police official said they remain focused on the government’s belief Altintas had links with Fethullah Gulen who is blamed by Ankara for the failed July coup attempt. It’s a charge Gulen denies.<br /><br /> Analysts on the other hand have said the slogans that Altintas shouted when he shot the ambassador and which were captured on video, suggest more of a possible link with a radical Islamist ideology.<br />
