Colombian authorities and relatives of a hostage kidnapped by rebels nearly six years ago have cautiously welcomed a video allegedly showing her alive. Ingrid Betancourt can be seen looking gaunt and tired with a chain around her wrist, staring at the ground. Betancourt, a Franco-Colombian politician, was captured while she was campaiging in the 2002 presidential election. She was last seen alive in a video believed to date back to 2003. The tape, seized during a raid in the capital Bogota in which three suspected rebels were arrested, was apparently shot just over a month ago.