"Within minutes of deputies' arrival, he used the weapon on himself," local police reported.

Tributes have poured in for David Wilcock, known for appearing in a number of shows including Ancient Aliens, Cosmic ...

The History Channel paranormal expert was just 53 years old.

The paranormal content creator often appeared in the History Channel series.

Ancient Aliens' star David Wilcock died by suicide at age 53 following a standoff with Boulder, Colorado, police on April 20, ...