No deaths or injuries were reported in the attack in Khost province's Domanda district, the Interior Ministry said in a statement. Suspected Taliban, who are active in the mountainous eastern region bordering Pakistan, descended on the camp around 2 a.m.
Such raids seek to discourage foreign involvement in Afghanistan and destabilize the central government, which is struggling to bring development to the impoverished countryside and extend its mandate outside the capital, Kabul.
It wasn't clear whether the camp was targeted due to Indian involvement, although militants have launched a number of bloody attacks on Indian interests in Afghanistan over recent years.
A total of 75 people were killed in suicide car bombings outside the Indian embassy in Kabul in July 2008 and October 2009, while at least six Indians were killed in an attack on a Kabul guesthouse in February. Taliban insurgents have claimed responsibility for the attacks, although New Delhi has claimed archrival Pakistan may have provided support in the embassy attack.
Elsewhere, two members of a nomadic tribe were killed by a roadside bomb Friday in the southern province of Kandahar, the ministry said. No details were given.
NATO said a joint Afghan-international force captured an explosives expert and several other suspected militants in a raid on a compound west of Kandahar city on Friday night. It did not say whether any bomb-making materials were recovered.
Following a rancorous week, U.S. and Afghan officials have recommitted to their relationship, with President Barack Obama saying in an interview published Friday that Karzai remains "a critical partner" in the fight against terrorism.
That followed Karzai's recent stern assertions of Afghan sovereignty and accusations that the United Nations and the international community interfered in last year's fraud-tarnished presidential election in Afghanistan.