From AV Herald:
Radar data suggest the aircraft had reached FL380 about 3 minutes prior to leaving FL380 and descended from FL380 through FL110 in 8 minutes (average rate of descent 3375 fpm). The aircraft appeared to have levelled off at FL068 for one minute while on a northeasterly heading of 26 degrees true, mountains rise up to 8900 feet about 1nm north of the last reported aircraft position.