ISLAMABAD, Pakistan (CNN) -- One of two Chinese engineers held hostage for seven weeks by Taliban militants escaped Friday, Pakistan's military said.
The two engineers, who were kidnapped in August in northern Pakistan, both attempted to escape early Friday but one was shot in the leg and remains in the hands of his abductors, said Muslim Khan, a spokesman for the Taliban.
Khan said the remaining captive had been moved to a new location.
It was not immediately clear what the group has been demanding in exchange for the hostages' release.
Khan also said that Maulana Fazlullah, the Taliban commander in the Swat district, has ordered an internal investigation into how the two Chinese hostages were able to attempt escape.
The Chinese engineer who escaped is in Peshawar under army protection, military sources said.
The names of engineers were not released.
China's official Xinhua news agency said the engineers, working with Zhongxing Telecommunication Equipment Company, disappeared on August 29 after finishing their work in Lower Dir -- a district in the Northwest Frontier Province.
Their Pakistani driver and security guard also went missing, Xinhua said.
The Taliban in Swat Valley later claimed responsibility for the abduction, Xinhua said.