Two Chinese engineers were kidnapped early Saturday in Pakistan's tribal area, bordering Afghanistan, according to the Chinese Embassy.
The two Chinese engineers and five unidentified kidnappers were moving on the road near Jandola, a town in Pakistan's South Waziristan tribal area, the sources in the Chinese Embassy told Xinhua.
Pakistan security forces were trying to rescue the kidnapped Chinese, the sources said.
The missing Chinese had been working on the Gomal Zam Dam project, which is close to the South Waziristan tribal region, the scene of fierce fighting since March between security forces and al Qaeda-linked militants.
An official at the Chinese Consulate in Karachi identified the men as Wang Ende and Wang Teng, who worked for China's state-run Sino Hydro Corp. He declined to give more details.
The men left work at around 6 a.m. (1300 GMT) on Friday and their abandoned vehicle was found in Tormandi, in nearby South Waziristan, a provincial government official said. He added that one police officer was missing.
South Waziristan has been the scene of fierce battles between al Qaeda-linked foreign militants and security forces in which hundreds of people have died.
The semi-autonomous tribal region bordering Afghanistan has also long been notorious for kidnappings for ransom.
In May, three Chinese technicians working on a deep sea port construction project were killed and nine wounded in a car bomb attack in the southern Pakistani city of Gawadar.
China showed its deep concerns for the safety of two kidnapped Chinese engineers in Pakistan, said Foreign Ministry spokesman Kong Quan on Saturday.
Two Chinese engineers, working on the Gomal Zam Hydroelectric project, were kidnapped by unidentified militants Saturday morningat the northwestern border of Pakistan, said Kong.
With their high attention paid to the abduction, Kong noted, the Chinese Foreign Ministry and the Chinese Embassy in Pakistan immediately contacted the Pakistan side, showing China's great concern for the safety of the kidnapped Chinese engineers.
Kong said China urged the Pakistani government to take effective measures to find the whereabouts of the Chinese engineers, ensure their safety and spare no effort in their rescue.
Moreover, the Chinese side requests the Pakistan side to further strengthen security work to guarantee the safety of the Chinese personnel working on Pakistani projects and beef up security work at their project sites, Kong said.