Federal authorities on Wednesday announced the arrest of a Washington state man accused of aiding the suicide bomber who attacked a fertility clinic in Palm Springs last month, killing himself and injuring several others.

Daniel Jongyon Park, 32, of the Seattle area, was taken into custody Tuesday at New York’s JFK Airport after being deported from Poland, officials said at a news conference held at the FBI’s Los Angeles headquarters.

Park is charged with providing material support to a terrorist. Prosecutors allege he supplied 270 pounds of ammonium nitrate — a chemical compound used in explosives — to 25-year-old Guy Edward Bartkus, who detonated a bomb outside the American Reproductive Centers on May 17.

The explosion destroyed the clinic, killed Bartkus and injured several people.

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