U.S. President Donald Trump said on Thursday that he would direct the Department of Defense and other agencies to make public government files related to alien and extraterrestrial life.

Trump said the files that will be identified and released will also concern unidentified aerial phenomena and unidentified flying objects, as well as “any and all other information connected to these highly complex, but extremely interesting and important, matters.”

In a Truth Social post, the U.S. president said his move was based on the “tremendous interest” in the subject, without providing additional details. This comes after he accused former U.S. President Barack Obama of leaking “classified information” on aliens.

“I don’t know if they’re real or not, but I can tell you he gave classified information,” Trump told reporters on Air Force One.

Obama said on Saturday in a podcast that aliens were real, “but I haven’t seen them, and they’re not being kept in ... Area 51.”