France on highest security alert after terror attack

LONDON -- Three people are dead after a series of stabbings in a "suspected terror attack" that occurred at the Basilica of Notre-Dame in Nice, France, at 9 a.m. local time on Thursday, ABC News can confirm.

"Thank you to our municipal police officers who arrested the author of a stabbing attack in the Notre Dame sector at #Nice06," the mayor of Nice, Christian Estrosi, said in a tweet. "I ask the people of Nice to...