The father of the Orlando nightclub gunman came to the U.S. from Afghanistan more than 30 years ago and has made a series of rambling political videos about his former homeland, even once describing himself as its "revolutionary president."
Seddique Mir Mateen maintained a high profile on social media in the U.S., but is a mystery to Afghan authorities. Some government departments ran background and security checks Monday and found no trace of him, an official said.
Mateen met with reporters Monday at his home in Port St. Lucie, Florida, and called the massacre by his son, Omar Mateen, "the act of a terrorist."
The deadly weekend attack shocked the...