Pennsylvania State Police sent out an alert last week to its department and law enforcement partners as a reminder to be vigilant of persons who may try to impersonate police, fire and first responders in order to carry out an attack in the U.S., reports CBS News.
Pennsylvania State Police confirm that a memo was sent out, but was not related specifically to Pope Francis' visit. Pope Francis is wrapping up his trip in Cuba and arrives in the U.S. on Tuesday.
The official said there are no credible known threats against the Holy Father. However, the official said the alert would apply to the pope's visit as well.