A 30-year-old Texas man is being held in Israel for allegedly plotting to attack Islamic holy sites with stolen military material, officials said Tuesday. Adam Everett Livvix was nabbed in November as part of a joint probe by the FBI, Israeli police and the Israeli security agency Shin Bet, but his arrest was not revealed until his indictment this week.

Livvix, who was already wanted in the U.S. on drug charges, traveled to the Middle East last year and lived in Bethlehem and Hebron, where he posed as a Navy SEAL. A Palestinian operative tried to enlist him in a scheme to assassinate President Obama, Shin Bet said, but he balked. However, he allegedly did begin planning attacks on holy sites in Jerusalem, using explosives obtained with the help of his roommate, an Israeli soldier.

Livvix is undergoing a psychiatric evaluation, the Associated Press reported.

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