The southern French city of Nice has opened up a center to provide support to people grieving over victims of the deadly truck attack on Thursday evening.

The center will be open 24 hours a day to offer psychological and religious support. Four religions are represented -- Catholics, Protestants, Muslims and Jews. The attacker claimed at least 84 lives, as he struck crowds out celebrating France's national holiday, Bastille Day. Catholic priest Stephane Drion said the center hopes to help people overcome the sense of loneliness after losing a loved one.