Bomb Explodes Near Convoy of Presidential Frontrunner

Security personnel stand near to site of suicide attack that struck the convoy of presidential candidate Abdullah Abdullah in Kabul, June 6, 2014.

Security personnel investigate the site of a suicide attack that struck the convoy of presidential candidate Abdullah Abdullah in Kabul, June 6, 2014.

An Afghan health worker stands after a suicide attack that struck the convoy of presidential candidate Abdullah Abdullah in Kabul, June 6, 2014.

An Afghan police officer keeps watch at the site of bomb blasts in Kabul, June 6, 2014.

An election poster of Afghan presidential candidate Abdullah Abdullah is pictured on the broken window of a bus damaged during a bomb attack in Kabul, June 6, 2014.