Washington Post reporter Jason Rezaian, who was once imprisoned in Iran for more than a year during the Obama administration, took to Twitter to criticize President Donald Trump on Monday, in the wake of tweets the president issued regarding the released UCLA basketball players caught shoplifting in China.

Trump tweeted a message to LaVar Ball, the outspoken father of one of the basketball players, on Sunday, for downplaying Trump’s intervention in getting the players released, and downplaying the shoplifting as “nothing.”

“Who?” LaVar Ball told ESPN on Friday, when asked about Trump’s involvement in the matter. “What was he over there for? Don’t tell me nothing. Everybody wants to make it seem like he helped me out.”

“They try to make a big deal out of nothing sometimes,” Ball told reporters, in reference to his son’s alleged shoplifting crime in China. “I’m from L.A. I’ve seen a lot worse things happen than a guy taking some glasses. My son has built up enough character that one bad decision doesn’t define him.”

“Now that the three basketball players are out of China and saved from years in jail, LaVar Ball, the father of LiAngelo, is unaccepting of what I did for his son and that shoplifting is no big deal. I should have left them in jail!” tweeted an outraged Trump.

Rezaian fired back at Trump, tweeting, “My dad was dead when the US negotiated my release from prison in #Iran, but if he was alive he’d have been deeply appreciative of all efforts to get me out. If for some reason, though, he was less than gracious about it I doubt @BarackObama would have needed to pull one of these.”

Rezaian, an American-Iranian journalist, served as the Tehran bureau chief for the Post and was imprisoned for 544 days, beginning in 2014, during the Iran nuclear negotiations with the Obama administration. Rezaian was held in one of Iran’s most notorious prisons.

The Iranian government eventually charged Rezaian with espionage. Rezaian later sued the Iranian government for using his captivity as leverage in the nuclear negotiations.

The basketball players, on the other hand, were let go from Chinese detention in just a few days, due to President Trump’s intervention on their behalf.

Trump doubled down on his criticism, saying he should have waited until his next visit to get Ball’s son of out of jail. “Shoplifting is a very big deal in China, as it should be (5-10 years in jail), but not to father LaVar,” Trump tweeted. “Should have gotten his son out during my next trip to China instead. China told them why they were released. Very ungrateful!”