The Taliban terrorist group has said that Kevin King, an American professor who were kidnapped at gunpoint in Kabul last year, is seriously ill and is in need of urgent medical attention.

Taliban spokesman Zabihullah Mujahid said on Monday that King was suffering from “dangerous” heart disease and kidney problem.

“His illness has intensified, his feet have swollen and sometimes he becomes unconscious and his condition worsens every day,” Mujahid said in a statement.

“We have tried to treat him time to time but we do not have medical facilities as we are in a war situation,” he added.

King and his Australian Colleague Timothy Weeks were abducted more than a year ago while they were returning to their compound in Kabul.

Haqqani network, a militant group affiliated with the Taliban, is responsible for a number of kidnappings and is considered responsible for this one.

The Taliban made the remarks two weeks after Canadian Joshua Boyle and his American wife Caitlan Coleman were rescued by Pakistani troops. They had been held by the Haqqanis since 2012.

The Taliban released a video of King earlier this year, showing them pleading with their government to free Taliban prisoners in turn for their freedom.

In recent years, kidnapping high profile targets has become a lucrative business for terrorist groups in Afghanistan.