2nd attack in Kabul as suicide bomber kills 20

A suicide bomber struck outside the gates of a police academy in Kabul, killing at least 20 recruits, the second attack to hit the Afghan capital today.
A police officer, who goes by the name of Mabibullha, says the attacker walked into a group of recruits waiting outside the police academy and detonated his explosives-laden vest this evening.
Another police officer, who spoke on condition of anonymity because he was not authorised to talk to reporters, says there were also at least 25 wounded among the recruits.
Nobody claimed responsibility for the attack, the second large bombing today in the Afghan capital. Earlier in the day a massive truck bomb killed at least 15 people near a government complex and a military base in a residential area of Kabul.