Responding to Donald Trump’s statement in Sunday’s presidential debate that the late Army Capt. Humayun Khan “would be alive” if he were president, Khan’s family released a statement blasting the GOP nominee for lying about his opposition to the Iraq War.

In a statement posted to Twitter by MSNBC’s Hallie Jackson, Khan’s parents, Khizr and Ghazala, said that they knew that their son was “an American hero.”

“We also know that Donald Trump is not telling the truth when he says he was against the Iraq War,” the statement read. “Our son served this country with honor and distinction, and gave the ultimate sacrifice.”

“The only thing that Donald Trump sacrifices is the truth,” the statement concluded.

Read the statement below:

Stmt from Khans re: Trump’s comments: their son “gave the ultimate sacrifice. The only thing that Donald Trump sacrifices is the truth.” pic.twitter.com/h2jb7DphUH — Hallie Jackson (@HallieJackson) October 10, 2016

During the debate, Trump said “If I were president at this time, he would be alive today because unlike her, who voted for the war without knowing what she was doing, I would not have had our people in Iraq. So he would have been alive today.”

At the Democratic National Convention in July, Khan’s father, joined by his wife on stage, hit Trump for his proposed ban on all Muslim immigration to the United States.

“Let me ask you: Have you even read the U.S. Constitution? I will gladly lend you my copy,” Khizr Khan said as he pulled a pocket Constitution from his jacket. “In this document, look for the words ‘liberty’ and ‘equal protection of law.’”