A new suspect is in custody Friday in the investigation into a gruesome attack by a Tunisian man who killed three people in a French church, as France heightened its security alert amid religious and geopolitical tensions around cartoons of the Prophet Muhammad.
The suspect is a 47-year-old man believed to have been in contact with the attacker the night before the attack on the Notre Dame Basilica in the Riviera city of Nice, according to a judicial official. The official was not authorized to be publicly named.