Mexican journalist Jaime Maussan presented two alleged alien corpses to Mexico's congress.
The "bodies" feature elongated heads, tiny bodies, and three fingers, said to belong to actual aliens.
Maussan claimed these remains were found in 2017 in Peru and dated to be up to 1,800 years old.
He asserted that these specimens are not part of Earth's evolution, emphasizing the need to accept the possibility of extraterrestrial life.
Maussan was joined by former US Armed Forces pilot Ryan Graves and astrophysics professor Avi Loeb.
Graves previously testified about the US concealing a program related to unidentified flying objects.
Loeb made controversial claims regarding interstellar materials found in the ocean.
Similar claims by Maussan in the past were dismissed as either ancient mummies or manipulated mummies by scientists.
During the session, Congress members watched videos of Mexican pilots encountering fast-moving flying objects.
Maussan's credibility is questioned due to his history of making unverified claims, making it uncertain if these are genuine extraterrestrial findings.