Ministry spokesman Lu Kang said China attached great importance on protecting the safety and legal rights of Chinese nationals overseas, but they must adhere to local laws and regulations, and respect local traditions and customs.
"As for reports that the relevant Chinese nationals were suspected of illegal missionary work in Pakistan, we will cooperate with the Pakistan government and launch and investigation in accordance with the law," Lu said.
The pair, identified by Pakistan authorities as Lee Zing Yang, 24, and Meng Li Si, 26, were abducted by armed men pretending to be policemen on May 24 in Quetta, the provincial capital of Baluchistan province. Last week, Islamic State's Amaq news agency said its members had killed them. The kidnapping was a rare crime against Chinese nationals in Pakistan, which has long had close ties to Beijing, but it has alarmed the growing Chinese community in the country.