People carry a coffin of a church attack victim during a funeral in Cairo, Egypt, on Dec. 29, 2017. At least ten people were killed in a shootout outside Mar Mina church in Cairo district of Helwan on Friday. (Xinhua/Aly Fahim)

UNITED NATIONS, Dec. 29 (Xinhua) -- United Nations Secretary-General Antonio Guterres has condemned the attack that took place earlier Friday outside Mar Mina church in the Helwan district, south of Cairo, Egypt.

In a statement from his spokesman, the Secretary-General extended his deepest condolences to the families of the victims and to the Government and people of Egypt and wishes a swift recovery to those who have been injured.

According to media reports, at least 10 people were killed when gunmen opened fire on a Coptic Orthodox Church on Friday, in the southern Cairo neighborhood of Helwan.

"The Secretary-General calls for those responsible for today's horrific attack to be swiftly brought to justice," the statement concluded.