Taliban fighters entered the outskirts of Kabul on Sunday as panicked workers fled government offices and helicopters began landing at the U.S. Embassy in the Afghan capital, further tightening the militants’ grip on the country.

Three Afghan officials said that the fighters were in the districts of Kalakan, Qarabagh, and Paghman in the capital. The militants themselves didn’t acknowledge the advance, though they earlier took Jalalabad, near a major border crossing with Pakistan, the last major city other than Kabul not under their control.

In a nationwide offensive that has taken just over a week, the Taliban has defeated, co-opted, or sent Afghan security forces fleeing from wide swathes of the country, even with some air support by the U.S. military.

The rapid shuttle-run flights near the embassy began a few hours later as diplomatic armored SUVs could be seen leaving the area around the post. The U.S. State Department did not immediately respond to questions about the movements. However, wisps of smoke could be seen near the embassy’s roof as diplomats urgently destroyed sensitive documents, according to two American military officials.

The Czech Republic also approved a plan to begin withdrawing their Afghan staff from their embassy after earlier taking their diplomats to Kabul International Airport.

President Ashraf Ghani, who spoke to the nation Saturday for the first time since the offensive began, appears increasingly isolated as well. In his speech Saturday, Ghani vowed not to give up the “achievements” of the 20 years since the U.S.-led invasion toppled the Taliban after the 9/11 attacks.

Warlords he negotiated with just days earlier have surrendered to the Taliban or fled, leaving Ghani without a military option. Ongoing negotiations in Qatar, the site of a Taliban office, also have failed to stop the insurgents’ advance.

Thousands of civilians now live in parks and open spaces in Kabul itself, fearing the future. While Kabul appeared calm Sunday, some ATMs stopped distributing cash as hundreds gathered in front of private banks, trying to withdraw their life savings.

Militants posted photos online early Sunday showing them in the governor’s office in Jalalabad, the capital of Nangarhar province.

Abrarullah Murad, a lawmaker from the province said that the insurgents seized Jalalabad after elders negotiated the fall of the government there. Murad said there was no fighting as the city surrendered.

The militants took also Maidan Shar, the capital of Maidan Wardak, on Sunday, only some 90 kilometers (55 miles) from Kabul, Afghan lawmaker Hamida Akbari and the Taliban said. Another provincial capital in Khost fell later Sunday to the Taliban, said a provincial council member who spoke on condition of anonymity for fear of reprisals.

The fall Saturday of Mazar-e-Sharif, the country’s fourth-largest city, which Afghan forces and two powerful former warlords had pledged to defend, handed the insurgents control over all of northern Afghanistan.