Said Kouachi has reportedly already been buried at the city of Reims, where he lived before the deadly attack. His brother, Cherif, is to be buried at his hometown of Gennevilliers, outside of Paris.
As demonstrations against the satirical magazine are staged in many parts of the Muslim world, the French president defends what he says is his country's principle of freedom of expression.
They will gather for their call to prayer in the quadrangle outside Duke Chapel, a day after Duke University reversed course on allowing the traditional call to prayer from the chapel's bell tower.
Facing more than a dozen claims of sexual abuse by priests, the archdiocese says it needs protection to reorganize. Eleven other U.S. dioceses have filed bankruptcy since 2004.
The school had announced it would allow the traditional call to prayer from the Duke Chapel bell tower. The decision was excoriated, and today the private university in Durham, N.C., reversed course.