BEIJING (AP) — “Django Unchained” became “Django Unscreened” on Thursday as Quentin Tarantino’s violent slave-revenge saga was pulled from Chinese theaters on its opening day, with the importer blaming an unspecified technical problem.

The rare suspension order by China Film Group Corp. was confirmed by theater employees throughout China, and has led to speculation that the Hollywood film could have run afoul of Chinese censors despite weeks of promotion in the country.

Calls to the importer and to China’s regulatory agency, the State Administration of Radio Film and Television, were unanswered. The China office of Sony Pictures, which released the film, refused to comment.

“Django Unchained” reportedly cut some violent scenes and had already been cleared by China’s rigorous censors, who generally remove violence, sex and politically edgy content. With such an exacting system, suspension on a film’s premiere date is unusual.

Tian Zaixing, general manager of the Beichen Fortune Center movie theater in the southern city of Kunming, said he could not recall any other imported film being halted on the opening day. The order from China Film Group came in a phone call around 10 a.m., he said.

“We were excited about the film yesterday,” he said. “We had had high expectations for this film’s box office.”

Tian said he had hoped the movie would bring about one-tenth of the monthly box office, or about 150,000 yuan ($24,000), to his six-screen theater in April. Now, he must scramble to fill newly opened slots for screening.

“This means we might not be able to meet our box-office goal for the year,” Tian said.

The cited technical reason might only be a ruse, said Tian, who was unable to provide an alternative explanation.