Turkish police detain 13 people after Russian ambassador shot dead

Turkish police have detained 13 people over the killing of Russia's ambassador, security sources said, widening an investigation to relatives of the off-duty policeman.

His mother, father, sister and two other relatives were held in the western province of Aydin, while his flatmate in Ankara was also detained, Reuters reports.

Another six arrests were carried out in the province of Izmir.