2009 L'Aquila earthquake concrete elements of the fallen buildings "seemed to have been made poorly, possibly with sand". An official at Italy's Civil Protection Agency, Franco Barberi, said that "in California, an earthquake like this one would not have killed a single person". According to Italian media, L'Aquila's chief prosecutor has opened a probe into possible criminal blame for the collapses. Many people reported seeing peculiar sightings of light glows, flashes, lightning, flames and fireballs, all of which were considered candidates for earthquake light. 241 luminous phenomena were collected including photos and videos. At least 99 of such phenomena occurred before the main
2009 L'Aquila earthquake of European Centre for Earthquake Engineering; Claudio Eva, physicist; Mauro Dolce, director of the Civil Protection Agency's earthquake risk office; Bernardo De Bernardinis, former vice-president of Civil Protection Agency's technical department. Boschi had called a major earthquake "unlikely", while not entirely excluding the possibility. De Bernardinis had informed the public that there was "no danger". The prosecutors cited a scientific opinion that the low-level tremors ahead of 6 April quake were typical of the seismic activity preceding major convulsions, but the defendants had classified them as a "normal geological phenomenon". They were criticised in court for being "falsely reassuring" and