A security personnel detains a suspect after a blast in Kabul, November 25, 2014. A powerful explosion shook houses in the diplomatic quarter of Kabul on Tuesday, but there were no casualties in the second such incident in the Afghan capital in a single day, officials said. “Someone threw a hand grenade and he was apprehended”, said Sediq Sediqqi, a spokesman for the interior ministry. The suspect was being interrogated but his motive and target were still unclear, he added. (Photo by Omar Sobhani/Reuters)

Security personnel arrest a suspect after a blast in Kabul, November 25, 2014. (Photo by Mohammad Ismail/Reuters)

Security personnel arrest a suspect after a blast in Kabul, November 25, 2014. (Photo by Omar Sobhani/Reuters)

Security personnel arrest a suspect after a blast in Kabul, November 25, 2014. (Photo by Omar Sobhani/Reuters)

Security personnel arrest a suspect after a blast in Kabul, November 25, 2014. (Photo by Mohammad Ismail/Reuters)

Security personnel arrest a suspect after a blast in Kabul, November 25, 2014. (Photo by Omar Sobhani/Reuters)

A security personnel detains a suspect after a blast in Kabul, November 25, 2014. (Photo by Mohammad Ismail/Reuters)

Security personnel arrest a suspect after a blast in Kabul, November 25, 2014. (Photo by Mohammad Ismail/Reuters)