WASHINGTON -- President Trump's spokesman backtracked Tuesday on comments likening Bashar Assad to Holocaust architect Adolf Hitler.

"We didn't use chemical weapons in World War II ... Someone as despicable as Hitler didn't even sink to using chemical weapons," White House press secretary Sean Spicer said.

Asked to explain, Spicer said he meant to say that Hitler had not used chemical weapons in battlefield situations as Assad did last week.

"I think when you come to sarin gas, he was not using the gas on his own people the same way that Assad is doing, there was not in the — he brought them into the Holocaust center," he said.

Hitler's use of gas chambers killed millions of Jewish people during the Holocaust.

His comments spurred outrage online, especially given that it is Passover.