BEIJING (AFP) - China on Friday (Aug 27) condemned the deadly attacks by Islamic State in Iraq and Syria (ISIS) suicide bombers outside Kabul airport, saying Afghanistan still faces a "complex and severe" security situation as the United States withdraws.

Two blasts killed at least 85 people including 13 US soldiers near the airport on Thursday, ripping through crowds desperate to flee Taleban-controlled Afghanistan.

The ISIS group said it carried out the attacks.

The blasts show "the security situation in Afghanistan is still complex and severe", Chinese foreign ministry spokesman Zhao Lijian told reporters on Friday.

"China is shocked by and strongly condemns the explosions," Mr Zhao said, adding that the ministry had not received any reports of Chinese casualties.

More than 100,000 people have been evacuated from Afghanistan since the Taleban swept to power on Aug 15, with many Afghans desperate to escape the feared hardline rule of the Islamists.

The Taleban have allowed US-led forces to conduct the airlift while they finalise plans for a government to be announced after the American troops leave.

But ISIS militants, rivals of the Taleban with a record of barbaric attacks in Afghanistan, were intent on capitalising on the chaos in Kabul.

Mr Zhao on Friday said China "hopes the relevant parties can take effective measures to ensure a smooth transition of the situation".

Beijing has said it is ready to deepen "friendly and cooperative" relations with Afghanistan after the Taleban seized power in a lightning offensive amid the chaotic pullout of American troops.

There is a potential resource boom to be had from Afghanistan's vast copper and lithium mines, but experts say the perilous security situation means any immediate commodities rush by Chinese firms is unlikely.

China, which shares a 76km border with Afghanistan, is wary that its neighbour could become a staging ground for Muslim-minority Uighur separatists looking to infiltrate the sensitive border region of Xinjiang.