NEW : ISAF officials say they have no indications the network was attacked . Interior ministry spokesman cites questions about vehicles used , people killed . The blast also claimed the lives of two British civilians , a Kosovo national and a Canadian soldier . Iranian officials have raised alarms about the network and its ties to Pakistan .
NEW : ISAF officials say they have no indications the network was attacked . Interior ministry spokesman cites questions about vehicles used , people killed . Iranian officials have raised alarms about the network and its ties to Pakistan .