and on the forth anniversary of her death, a look at why agatha christie remains the world's best selling author. ten empty chair are now known to have died in a bomb blast in the largest stir istanbul. it happened in the district, an area known for his toric monuments. it is popular with tourists and eight of the dead are german. the explosion was so large it was heard several kilometers away. shortly after convened an emergency security meeting he says the suspected bomber was a member of isil. turkey was already on high alert after a series of attacks blamed on isil including a double suicide bombing in october, that left more than 100 people dead. first here is the report from istanbul been. >> and square is in the heart of istanbul, millions of tourists gave him wonder of the blue mosque many the museum. >> it was the suicide bomb, yeah, i went there and saw it and came back to the hotel in chaos. everyone was running around. police didn't see this coming they were upset but at the same time they were trying to evacuate the area, because they said a second bomb can go off. >> the per

. >>> and on the 40th anniversary of her death, a look at why agatha christie remains the world's best selling author. >> we have the latest in authority including russia makes efforts to reform after a challenging--damaging doping scandal leads them far afield from the track and field. >> ten people are known to have died in a bomb blast in istanbul. the attack happened in an area known for historic monuments. it's popular with tourists, and eight of the dead are german. the explosion was so large that it was heard several kilometers away. they say that the suspected bo bomber was a syrian member of isil. security was on high alert after attacks from isil including an event that lest more than 100 dead. [ sirens ] >> the heart of istanbul. many tourists come here to visit the mosque. >> it was a suicide-bomb, yes. i went there and saw it and came back to the hotel. it was chaos. everyone was running around. the police did not see this coming. they were upset but at the same time they were evacuating the area because they said a second bomb could go off. >> ten people are confirmed kil

and what agatha christy does is throughout the play, she makes all of them possible murders. >> reporterndon's theater district is a statute of christy, her work continues to generate royalties of $4 million a year. and last year ten lost place were rediscovered. keeping people guessing even beyond the grave. >>> agatha christy died 40 years ago. there is lots more to come here on al jazeera. felicity barr will be here with you to take you through the next couple of hours bringing you the very latest to come out of istanbul, so don't go away. ♪ 23rz >> al jazeera america brings you independent reporting without spin. >> not everybody is asking the questions you're asking me today. >> we give you more perspectives >> the separatists took control a few days ago. >> and a global view. >> now everybody in this country can hear them. >> getting the story first-hand. >> they have travelled for weeks, sometimes months. >> what's your message then? >> we need help now. >> you're watching al jazeera america. >> understanding the epidemic. >> it was terrifying. >> it's like navigating a minefield.

and on the forth anniversary of her death, a look at why agatha christie remains the wo

. >>> and on the 40th anniversary of her death, a look at why agatha christy remains the world's best-sellinghor. ♪ >>> hello, ten people are now known to have died in a bomb blast in turkey's largest city, istanbul. the attack happened in the sultanahmet district. it is popular with tourists and officials say nine of the dead are german. shortly after the prime minister convened an emergency security meeting. he says the suspected bomber was a foreign member of the islamic state of iraq and the levant. the city was already on high alert after a series of attacks blamed on isil including a bombing in october that left more than a hundred people dead. >> reporter: it's the heart of istanbul, and one of its most popular tourist spots. this is the square less than an hour after the explosion. the site cordoned off. >> translator: it was a suicide bomb, yes. i went there and saw it and came back to the hotel. it was chaos. everyone was running around. police didn't see this coming up in they were upset, but trying to evacuate the area, because they said a second bomb could go off. >> reporter: is