U.S. immigration authorities have barred a 21-year-old Syrian cinematographer who worked on a harrowing film about his nation’s civil war, The White Helmets, nominated for an Academy Award entry into the U.S.. According to internal Trump administration correspondence seen by A/P, the Department of Homeland Security has decided at the last minute to block Khaled Khateeb from traveling to Los Angeles for the Oscars.

Khateeb was scheduled to arrive yesterday in L.A. on a Turkish Airlines flight departing from Istanbul, but his plans have been upended after U.S. officials reported finding “derogatory information” regarding Khateeb.

The term “derogatory information” is a broad category that can include anything from terror connections to passport irregularities. A spokeswoman for the Department of Homeland Security, Gillian Christensen, said,

“A valid travel document is required for travel to the United States.”

The White Helmets, a 40-minute Netflix documentary, has been nominated for Best Documentary Short. If the film wins the Oscar, the award would go to director Orlando von Einsiedel and producer Joanna Natasegara. Khateeb is one of three people credited for cinematography; Franklin Dow is the film’s DP.

The film focuses on the rescue workers who risk their lives to save Syrians affected by civil war and many of the group’s members have been killed by Syrian President Bashar Assad’s air forces. The group also was nominated for last year’s Nobel Peace Prize.

Khateeb had been issued a visa to attend the ceremony with Hollywood’s biggest stars, but Turkish authorities detained him this week, according to the internal U.S. government correspondence, and he suddenly needed a passport waiver from the United States to enter the country. The correspondence indicated he would not receive such a waiver.

There was no explanation in the correspondence for why Turkey detained Khateeb. You can see a trailer for the film below.

(via LGBTQ Nation)