President Xi Jinping has sent a message of condolence to his Egyptian counterpart Abdel Fattah el-Sisi after Friday's terrorist attack on Coptic Christians in Egypt's southern province of Minya, which killed at least 28 people.

President Xi condemned the violence, saying China opposes all forms of terrorism. Beijing supports Egypt's anti-terrorism efforts to safeguard security and stability, he said.

Premier Li Keqiang also extended his condolences to Egyptian Prime Minister Sherif Ismail, those injured in the attack and the families of victims.

Friday's attack saw gunmen attack a group of Coptic Christians traveling by bus to a monastery. Many of the 28 fatalities were children. Over 20 others were wounded.