Afghan official: 4 security guards killed by suicide bomber

A police official says at least four security guards have been killed after a suicide bomber attacked their checkpoint in eastern Afghanistan.
General Faizullah Ghyrat, provincial police chief in Khost province, said today that six other security guards were wounded in the attack today.
The suicide bomber used a mini-van and targeted the Afghan guards who were providing security for a US military base near the city of Khost, said Ghyrat.
No group has claimed responsivity for the attack, but Taliban insurgents and especially Haqqani insurgents are active in the area.