FILE PHOTO: Policemen inspect the site of attack on Mar Mina church in Helwan district on the outskirts of Cairo, Egypt, December 29, 2017. REUTERS/Amr Abdallah Dalsh

CAIRO (Reuters) - At an hour that Sama’an Farag usually spends leisurely sipping his morning tea, the doorman at the Mar Mina Coptic Church near Cairo found himself springing up to close the doors upon hearing gunshots and the sound of ricocheting bullets.

Inside, dozens of children at Sunday school, held on Friday morning to coincide with Egypt’s weekend, were rushed upstairs out of the range of the gunfire.

“Imagine children from kindergarten to high school, they were all still inside the church. God forbid if he (gunman) had entered the church - there would have been many more victims,” said churchkeeper Saad Saeed.

The gunman fired at the church and a neighboring Christian-owned shop on Friday, killing at least 11 people, security and church sources said. The attack was later claimed by Islamic State militants via their news agency Amaq.

“I heard that there was a paralyzed man who was killed with his wife. We felt sad for him, the other people, and the policeman who was killed,” Farag said.

The police conscript who had stood alongside Farag and the other doormen behind the massive gates was killed by gunfire.

Islamist militants have claimed several attacks on Egypt’s large Christian minority in recent years, including two bombings on Palm Sunday in April and a blast at Cairo’s largest Coptic cathedral in December 2016 that killed 28 people.

The country has fought an insurgency led by Islamic State in the Sinai Peninsula that has killed hundreds of soldiers and policemen since the Egyptian military overthrew President Mohamed Mursi of the Muslim Brotherhood in mid-2013 - although no official death toll has been released to date.

Police have stepped up security measures around churches ahead of Coptic Christmas celebrations on Jan. 7, deploying officers outside Christian places of worship and setting up metal detectors at some of the bigger churches.