The Latest: Hollande cancels trip to Prague after attack

The Czech presidential office says it was informed about the decision by the French embassy in Prague.

An Islamic State-run media outlet says the man who barreled his truck into a crowd in the French coastal city of Nice is a "soldier" of the group.

The Aamaq news agency cited a "security source" as saying the attacker "carried out the operation in response to calls to target the citizens of coalition countries fighting the Islamic State."