Tests confirmed the theory that a paper banner was set on fire, he said.
Tacked above the table are pink paper banners with faded inscriptions.
Among them was a cadre of middle-aged men who for 50 miles carried a paper banner, four abreast, and never tore it once.
A priest will put a triangular paper banner of three colors with special characters on every sacrifice.
For the feast days of patron saints, cut paper banners are strung over roads and hung in windows.
A small paper banner stood above each marker, inked symbols giving the size and composition of the force.
He said that the third-floor lounge was an inferno five minutes after the paper banner was set aflame.
The authorities said the fire started when several students ignited a paper banner in a lounge.
Prosecutors said a paper banner draped over a couch was set ablaze, creating intense smoke and heat.
She has just recently returned to work, in a new office hung with paper banners that carry prayers and messages of encouragement.