Daniel Park of Kent, Washington, was arrested in Poland and taken into custody by the FBI at John F. Kennedy Airport in New York City, for allegedly aiding bomber Guy Edward Bartkus.

Daniel Park, 32, was accused of supplying chemicals to Guy Edward Bartkus of California, the bomber, who died in the May 17 explosion.

Daniel Park, 32, was accused of supplying chemicals to Guy Edward Bartkus of California, the bomber, who died in the May 17 explosion.

Park, 32, was accused of supplying chemicals, including over 270 pounds of ammonium nitrate, to the bomber, Guy Edward Bartkus, who died in the May 17 explosion.

Records from an AI chat application show Guy Edward Bartkus, the primary suspect in the bombing, "researched how to make powerful explosions using ammonium nitrate and fuel," authorities said.

U.S. Attorney Bilal Essayli said at a news conference that Park shared the "extremist beliefs" of bombing suspect Guy Edward Bartkus, who died in the blast that injured four others on May 17.

Daniel Park, 32, was accused of supplying chemicals to Guy Edward Bartkus of California, the bomber, who died in the May 17 explosion.

Daniel Park, 32, was accused of supplying chemicals to Guy Edward Bartkus of California, the bomber, who died in the May 17 explosion. The two men connected in fringe online forums over their shared ...