GOP Rep. Duncan Hunter under fire for ad calling his opponent a 'security risk', cites Munich plot Rep. Hunter was indicted for using campaign funds for personal expenses.

California Republican Rep. Duncan Hunter, who was indicted in August on charges of using campaign funds for personal expenses, is facing criticism over an ad calling his opponent, Ammar Campa-Najjar, a “security risk.”

The ad also accuses Campa-Najjar of changing his name to “hide” his family's connection to terrorism in reference to his grandfather's involvement in the 1972 Munich Olympics terror plot. The narrator says Campa-Najjar’s grandfather was the mastermind behind the attack, although a different member of the terror group that carried out the attack took responsibility in 1999.

The Washington Post fact checked Hunter’s ad and gave it “Four Pinocchios," its worst rating, for failing to mention that Campa-Najjar’s grandfather was killed by 16 years before he was born.

The ad also failed to mention that, Campa-Najjar, a Democrat and former Obama staffer changed his name to honor his mother's Mexican family, the Campas. He changed his name years prior to this race, according to the Washington Post.

Campa-Najjar, a Palestinian Mexican American, grew up in a Christian household in San Diego. He worked at the White House under President Barack Obama beginning in 2013 and at the Labor Department until 2017.

According to the Washington Post, he had security clearance for both of those jobs, which required him to pass an FBI background check.

Campa-Najjar has taken to Twitter to defend himself.

ABC News partner FiveThirtyEight gives Hunter a six in seven chance of winning the race.