Overview

• Daniel Park, 32, of Kent, Washington, was arrested June 4 at JFK Airport after being deported from Poland and charged with providing material support to a terrorist.
• Federal prosecutors say Park shipped 180 pounds of ammonium nitrate to Guy Edward Bartkus and paid for an additional 90 pounds used in the May 17 clinic bombing.
• Bartkus, driven by a fringe anti-natalist ideology opposing human reproduction, died in the explosion that destroyed the clinic’s facade and damaged surrounding buildings.
• The blast, described by the FBI as one of Southern California’s largest terror scenes, left four bystanders injured but spared the facility’s lab and all stored embryos.
• Investigators are probing Park’s bomb-making experiments with Bartkus in Twentynine Palms and exploring whether he has ties to broader extremist networks.