(CNN)The international charity Save the Children says that its office in Islamabad, the Pakistani capital, has been closed by national authorities without notice.
But Pakistani authorities on Friday issued a statement saying that several nongovernmental organizations were working against the country's national interests and would not be allowed to continue their work.
Save the Children said it has been working in Pakistanfor more than 35 years and had a staff of 1,200 people in the country, none of them expatriates.
"On June 11, Save the Children confirmed that its office in Islamabad, Pakistan, had been closed and sealed off today by the Pakistani authorities," the international organization said in a Thursday statement. "Save the Children was not served any notice to this effect. We strongly object to this action and are raising our serious concerns at the highest levels."