The Chinese Communist Party is moving to crack down on online talk in China about the crash of the China Eastern Airlines Boeing 737-800 that plunged vertically into a mountain range last week, killing over 130 people who were on board.

Radio Free Asia, which is funded by the U.S. government, reported that the communists were “moving to delete rumor, speculation and opinion about the China Eastern crash from the country’s tightly controlled internet” following the announcement last week that everyone on board the plane had died.

“Chinese journalist Du Qiang recently complained on the social media platform WeChat that he and a colleague, Chen Weixi, were denied access to the crash site by police after flying there on the same day, only managing to take a few photos from a distance before being ordered to leave,” Radio Free Asia reported. “Du wrote that the roads leading to the crash site were blocked by three police checkpoints, and that fellow journalists working for Japanese broadcaster NHK met with similar treatment.”