In this photo released by China's Xinhua News Agency, an unidentified man with a gun walks in the street as people run in the background on Thamrin street near Sarinah shopping mall in Jakarta, Indonesia, Thursday, January 14, 2016. Suicide bombers exploded themselves in downtown Jakarta on Thursday while gunmen attacked a police post nearby, a witness told The Associated Press. Local television reported more explosions in other parts of the city. (Photo by Veri Sanovri/Xinhua via AP Photo)





Bodies are seen as a police officer walks near the site where an explosion went off in Jakarta, Indonesia, Thursday, January 14, 2016. (Photo by Dita Alangkara/AP Photo)





A police officer takes his position near the site where an explosion went off in Jakarta, Indonesia Thursday, January 14, 2016. (Photo by Dita Alangkara/AP Photo)





A police officer gives a hand signal to a squad mate as they search a building near the site of an explosion in Jakarta, Indonesia Thursday, January 14, 2016. Attackers set off explosions at a Starbucks cafe in a bustling shopping area of downtown Jakarta and waged gun-battles with police Thursday, leaving bodies in the streets as office workers watched in terror from high-rise windows. (Photo by Tatan Syuflana/AP Photo)





A police officer gestures at reporters as they search buildings near the site of an explosion in Jakarta, Indonesia Thursday, January 14, 2016. (Photo by Tatan Syuflana/AP Photo)





Indonesian soldiers stand guard near the site where an explosion went off in Jakarta, Indonesia Thursday, January 14, 2016. (Photo by Dita Alangkara/AP Photo)





Police officers take their position near the site where an explosion went off in Jakarta, Indonesia Thursday, January 14, 2016. Suicide bombers exploded themselves in downtown Jakarta on Thursday while gunmen attacked a police post nearby, a witness told The Associated Press. Local television reported more explosions in other parts of the city. (Photo by Dita Alangkara/AP Photo)





A rescue worker collects evidence from the site of a suicide bomb attack close to a polio eradication centre in Quetta, Pakistan, January 13, 2016. (Photo by Reuters/Stringer)





Rescue workers collect evidence from the site of a suicide bomb attack close to a polio eradication centre in Quetta, Pakistan, January 13, 2016. (Photo by Reuters/Stringer)





Crime scene investigators collect evidence from the site of a suicide bomb attack close to a polio eradication centre in Quetta, Pakistan, January 13, 2016. (Photo by Reuters/Stringer)





A Pakistani paramilitary soldier stands at the site of a bomb blast near a polio vaccination centre in Quetta on January 13, 2016. At least 15 people were killed in a blast apparently targeting police outside a polio vaccination centre in the southwestern Pakistani city of Quetta on January 13, according to officials. (Photo by Banaras Khan/AFP Photo)





A Pakistani mourner grieves alongside bodies of blast victims near a polio vaccination center in Quetta, Pakistan, January 13, 2016. (Photo by Banaras Khan/AFP Photo)





Members of foreign media report in front of the Obelisk of Theodosius where Tuesday's suicide bomb attack took place at Sultanahmet square in Istanbul, Turkey January 13, 2016. (Photo by Murad Sezer/Reuters)





A Turkish police officer stands guard as Turkish Prime Minister Ahmet Davutoglu and German Interior Minister Thomas De Maiziere visit people wounded at Tuesday's suicide attack at Sultanahmet Square in Istanbul, Turkey January 13, 2016. (Photo by Huseyin Aldemir/Reuters)





A Bayern Munich football club scarf is tied to a railing next to flowers at the Obelisk of Theodosius, the scene of yesterday's suicide bomb attack at Sultanahmet square in Istanbul, Turkey January 13, 2016. A suicide bomber who killed himself and 10 tourists, most of them German, in Istanbul's historic heart had registered with Turkish immigration authorities but was not on any list of known militant suspects, Turkey's interior minister said on Wednesday. (Photo by Murad Sezer/Reuters)





Red carnations are placed at the Obelisk of Theodosius, the scene of yesterday's suicide bomb attack at Sultanahmet square in Istanbul, Turkey January 13, 2016. (Photo by Murad Sezer/Reuters)





A tourist from China visits the site of Tuesday's suicide bomb attack at Sultanahmet square in Istanbul, Turkey January 13, 2016. (Photo by Osman Orsal/Reuters)





Afghan National Army (ANA) soldiers arrive after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. Afghan security forces exchanged fire with gunmen barricaded in a house near the Pakistan consulate in the eastern city of Jalalabad on Wednesday after a suicide bomber blew himself up, officials said. (Photo by Reuters/Parwiz)





Afghan security personnel stand next to a damaged police vehicle after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





Afghan police arrive after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





An Afghan policeman reacts as smoke billows during an attack near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





School children react as they were led away after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





A woman holds her daughter's head as they walk away after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





A school girl falls as she and others run after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





A man carries his son as they run after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





A member of the Afghan security personnel adjusts his helmet after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





A member of the Afghan security force inspects a damaged building after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





Afghan National Army (ANA) soldiers inspect a damaged building after a blast near the Pakistani consulate in Jalalabad, Afghanistan January 13, 2016. (Photo by Reuters/Parwiz)





An Afghan man assists two schoolgirls in the vicinity of an attack from a building close to the Pakistan consulate in Jalalabad on January 13, 2016. A suicide bombing followed by gunfire rocked an area near the Pakistani consulate in the eastern Afghan city of Jalalabad on January 13, killing at least two police officers, officials said. (Photo by Noorullah Shirzada/AFP Photo)





An Afghan man kisses his daughter as he walks near an attack from a building close to the Pakistan consulate in Jalalabad on January 13, 2016. (Photo by Noorullah Shirzada/AFP Photo)





An Afghan teacher, in brown, helps school children run from the site of clashes near the Pakistan consulate in Jalalabad, capital of Nangarhar province, Afghanistan, Wednesday, January 13, 2016. Several members of the Afghan security forces were killed Wednesday after unidentified gunmen attacked the Pakistani consulate in a volatile eastern province, an official said on Wednesday. (Photo by Mohammad Anwar Danishyar/AP Photos)