A 15-year-old boy has been arrested in Philadelphia for planning an attack on Pope Francis during his upcoming visit to the United States. The boy was arrested by the FBI after he was discovered to be posting about the attack on social media. The teenager was also discovered to have firearms in his possession and was inspired by the Islamic State group. The pope’s visit to the United States will be his first since the beginning of his reign as head of the roman catholic church. The US Authorities have since tightened security ahead of his visit.