Rihanna is in Nice and has canceled a planned concert there following a terrorist attack that has left more than 80 dead and more wounded .
"Due to the tragic events in Nice my concert scheduled for tomorrow July 15 at Allianz Stadium will not be going ahead as planned," she wrote in an Instagram post. "Our thoughts are with the victims and their families."
President Barack Obama condemned what he said "appears to be a horrific terrorist attack."
France has long known it is a top target for the Islamic State group. In September 2014, then-spokesman Abu Mohammed al-Adnani referred to "the filthy French" in a statement telling Muslims within the country to attack them in any way they could, including "crush them with your car."
France has been not only a prime target for Islamic State, but has seen more young Muslims head to join extremists than any other European nation. And Nice has been at the center of the movement, home to one of the most prolific creators of jihadi recruiting videos for the French-speaking world, a former petty drug dealer named Omar Omsen who is now fighting in Syria.
The Islamic State group carried out the November 2015 attacks, sending a group of largely French-speaking men to strike at France's national stadium, bars and cafes and the Bataclan concert venue. In March, the same Islamic State cell struck in Belgium.