Egypt's prosecutor's office ordered the arrest on Wednesday, July 10 of Muslim Brotherhood leader Mohamed Badie on charges of inciting violence outside the Republican Guard headquarters where 55 people were killed on Monday, according to Reuters.

Other senior Brotherhood officials were also ordered held, including Badie's deputy Mahmoud Ezzat and party leaders Essam El-Erian and Mohamed El-Beltagi.

Thousands of Brotherhood followers have been maintaining a vigil near a mosque in northeast Cairo demanding the reinstatement of Mohammed Morsi, toppled as president by the army last week.