rectangular/cigar shape object with glowing blue lights, glowing blue body and blue "exaust" trail.

This happened on the summer of 1990, while I and my father and a few other people were camping out in the mountains of South Kazakhstan (Tian Shan mountains).  
We were outside  watching a movie on the movie projector when all of sudden both my Dad and I looked up to the sky.  There was no sound that would attract out attention or anything causing us to look up, yet we did.  The sky was clear and dark, since it gets dark in the mountains quite early.  
There was a long rectangular/cigar shape object that went across the skies very fast.  I could not tell exactly how high it was above the ground.  
It was glowing bright blue light, similar to those modern LEDs.  It was dark, but had lights all over the body of the object.  Somewhat similar to a sky scraper at night.  All the lights were same glowing blue.  Additionally, the craft left a glowing blue trail behind itself that disappeared very quickly in the air.  
The object went across the sky extremely fast, with no sound, and disappeared behind the mountain.  
I can provide a picture (not a photo but a drawing)  that I made to better remember how how it looked.  Please let me know if similar object have ever been reported.  
After so many year it still puzzles me what it was.
Witness indicates that the date of the incident is approximate.  PD