Vatican on alert for Islamist attack, but no plot - security chief

ROME (Reuters) - The Vatican is on alert in case of an attack by Islamist militants against the city-state or Pope Francis, but officials are not aware of any specific plot, the head of Vatican security said in a rare interview.

"The threat exists. This is what has emerged from conversations with Italian and foreign colleagues," Domenico Giani told Polizia Moderna, the magazine published by Italian police, when asked if threats from Islamic State militants were credible.