Photo taken on July 29, 2019 shows a damaged vehicle at the site of an attack in Kabul, capital of Afghanistan. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. ( Photo by Rahmatullah Alizadah/Xinhua)

Photo taken on July 29, 2019 shows the site of an attack in Kabul, capital of Afghanistan. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)

Afghan security force members inspect at the site of an attack in Kabul, capital of Afghanistan, July 29, 2019. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)

Afghan security force members inspect at the site of an attack in Kabul, capital of Afghanistan, July 29, 2019. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)

Photo taken on July 29, 2019 shows the site of an attack in Kabul, capital of Afghanistan. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)

Photo taken on July 29, 2019 shows a damaged vehicle at the site of an attack in Kabul, capital of Afghanistan. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)

Photo taken on July 29, 2019 shows a damaged room at the site of an attack in Kabul, capital of Afghanistan. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)

An Afghan security force member stands at the site of an attack in Kabul, capital of Afghanistan, July 29, 2019. The death toll of a terrorist attack that targeted the office of Afghan President Mohammad Ashraf Ghani's running mate Amrullah Saleh, has risen to 20 with 50 others injured, an Interior Ministry spokesman said Monday. (Xinhua/Rahmatullah Alizadah)