The Coptic Christians of Egypt are an ancient religious minority whose persecution today is "the worst it has ever been," according to analysts.
The suspect was held yards from the scene of last month's terror attack on Parliament that left six people dead, including the attacker.
Nuclear North Korea is the focus on Friday as Secretary of State Rex Tillerson chairs a special meeting of the United Nations Security Council.
Arkansas executed convicted killer Kenneth Williams on Thursday, who was the fourth inmate put to death in the state in a little more than a week.
President Donald Trump told Reuters that America could be headed for a "major, major conflict" with North Korea over that country's nuclear program.