The daughter of Afghanistan’s ambassador to Pakistan was abducted in the middle of the Pakistani capital of Islamabad, held for several hours and brutally attacked, officials in both countries said on Saturday.

No one has been arrested in connection with Friday’s assault on Silsila Alikhil, 26. The Afghan foreign ministry issued a statement demanding a quick investigation, saying she was “severely tortured.”

A hospital medical report, seen by The Associated Press, said she suffered blows to her head, had rope marks on her wrists and legs and was badly beaten.

There was a suspicion that she had several broken bones and X-rays were ordered, the report said.

The report also said her abductors held her for over five hours and that she was brought to the hospital in Islamabad by police. There were no details about the abduction itself or the circumstances of her release.

Pakistan called the attack “disturbing” and said that security at the residence of the Afghan ambassador in Islamabad has been reinforced. The Afghan foreign ministry said it strongly condemns this “heinous act” and expressed concern for Afghan diplomats and their families in Pakistan.

Relations between the two countries are fraught with suspicion and animosity. They routinely trade accusations, with Afghanistan claiming Pakistan is sending thousands of jihadi militants to fight in Afghanistan and providing safe haven for the Taliban.

Pakistan in turn accuses Kabul of harbouring the anti-Pakistani group Tehreek-e-Taliban Pakistan — the Pakistani Taliban — and also the secessionist Balochistan Liberation Army.

As violence escalates in Afghanistan with the withdrawal of US and Nato troops, some within the Afghan government have stepped up verbal assaults on Pakistan.

A leading female senator in Pakistan, Sherry Rahman, condemned Friday’s attack and tweeted that “the Afghanistan ambassador's daughter is a young woman, and should not face ANY obstacle in walking about in central Islamabad, plus more importantly, she is entitled to diplomatic protection in Pakistan.”

Hamid Mir, a well-known Pakistani journalist who survived a 2014 shooting in the southern port city of Karachi asked in a tweet how something like this could happen in Islamabad.

“What is the use of expensive safe city cameras?” He also noted that Pakistani journalists and even a police officer have been abducted in Islamabad, with few culprits ever arrested.

Most of Islamabad neighbourhoods are upscale, with wide tree-lined boulevards. The Pakistani capital is home to all the diplomatic missions in the country, the majority of them located inside a heavily fortified enclave. The Afghan mission, however, is outside that enclave.

Pakistan’s foreign ministry said in a statement that “the safety and security of the diplomatic missions, as well as the diplomats and their families, is of utmost importance. Such incidents can and will not be tolerated.”

Chinese investigators

Chinese investigators, accompanied by Pakistani counterparts, on Saturday visited the site of a bus explosion in which 13 people, including nine Chinese workers, were killed earlier this week, multiple sources said.

The blast in northwest Pakistan on Wednesday sent the bus hurtling over a ravine. Pakistan initially blamed a mechanical failure but later said traces of explosives had been found and terrorism could not be ruled out.

The Chinese investigators were expected to spend up to four hours at the site to study it closely, one senior Pakistani administration official said. Two other senior government officials confirmed the visit. Pakistan’s foreign ministry and its military’s public relations wing did not immediately comment. AP, Reuters