Originally Posted by kevin
My idea - from clues and info on deleted scenes.
The Narada was only 75,000 kilometers from Klingon space (from radio chatter at the start of the film).
The impact of the Kelvin was substantial and crippled the ship. The Klingons, who would have detected the same spatial distortion the Federation did, had sent ships to investigate.
They capture the Narada and her crew
The crew is imprisoned and the Narada taken to a secret Klingon base for investigation.
Klingons - not being the brightest bunch, don't really know what they have and don't do much with it.
Until Nero and his crew manage to escape and continue their job.
Personally I suspect the Narada took offense to any Klingon trying to figure out how she worked, and promptly skewered them.