"I condemn the attack in Kabul and extend my condolences to bereaved families. Prayers with the injured for a speedy recovery," he tweeted.
A suicide bomber blew up a truck laden with explosives in central Kabul today, killing at least 28 people and wounding hundreds. The second attacker engaged security forces in a gunbattle before being gunned down.
The Taliban claimed responsibility for the attack which took place near the defence ministry.