Carl Paladino, the co-chair for Donald Trump’s campaign in New York, said that Khizr Khan’s remarks at the Democratic National Convention demonstrated a “lack of character and backbone” that dishonored his son, a Muslim-American soldier killed in combat.

In a Sunday email to BuzzFeed News, Paladino slammed Khan for his “lack of objectivity and submission to Hillary’s hideous effort to compel him to disgrace the memory of his son.”

He also questioned Khan’s motivations, saying that Clinton’s staff “obviously wrote the speech.”

“She even bought him the pocket constitution,” Paladino claimed, “which he probably never read but also returned to the staff after the speech.”

Paladino went on to accuse Khan of “advocating for Islamist terrorists” and communicating “with terrorist individuals and organizations,” implying that this motivated Khan’s remarks.

He did not provide evidence to support either claim.

“Allowing himself to be so controlled by Hillary that he would dishonor the memory of his heroic son shows the man’s lack of character and backbone,” Paladino concluded. “I am certain that most Gold Star parents would despise Mr Kahn’s (sic) attempt to politicize his son’s loss.”

Paladino previously suggested that Khan is “a member of the Muslim Brotherhood” and that Trump therefore does not have to respect or refer to him as a “Gold Star parent,” saying that Khan “certainly doesn’t deserve that title.”