On 2 November 1959, witnesses in Évora reported bright objects and a falling filament-like substance.

Évora matters because it is a Portuguese physical case with a reported filament fall.
Documented
Witnesses reported bright objects and a falling filament
Debated
The identity of the objects
Debated
The nature of the filament-like substance
Unverified
Extraterrestrial origin
Sources are kept in separate layers: official and contemporary material is documented; secondary UFO literature is treated as debated, not as primary evidence.
Documented source.
Secondary / debated material.