A NATO base in the restive eastern Afghanistan was attacked Saturday morning by suspected Taliban insurgents, police said the area.
International Security Assistance Force (ISAF), NATO could not confirm reports that the U.S. base in Khost province's under attack but it said it was investigating the reports.
"According to what I understand it's still going on, we try to get the details," said a spokesman for NATO.
Regional police chief, Judge Is'Haqzai Adbul told AFP that Taliban insurgents first attacked the Forward Operating Base (FOB) Salerno, before threatening to mastery of a secondary school in Khost city, capital of the province.
The school was close to a U.S. military base's small, FOB Chapman, he said.
Seven CIA agents were killed in a Taliban attack on FOB Chapman in December last, in what U.S. intelligence officials called the worst attack since 1983, when the U.S. embassy in Beirut was also bombed.
Saturday's attack began when guerrillas launched a rocket and gun fire towards Salerno at dawn, said Is'haqzai.