A Cypriot airliner crashed into a mountainous area north of Athens on Sunday killing all 121 people on board after apparently suffering a loss of cabin pressure or oxygen, Reuters reported. "The pilot has turned blue," a passenger said in a mobile text message to his cousin, according to Greek television. "Cousin farewell, we're freezing." Greek TV station Alpha said the pilot told air traffic controllers the Helios Airways Boeing 737 was experiencing air conditioning problems before communication with the plane -- flying at 35,000 feet en route from Larnaca in Cyprus to Prague via Athens -- was lost. Rescue workers said they did not expect to find survivors. A Greek police spokesman said there were 115 passengers and six crew on board the flight, of which 59 adults and eight children were heading to Athens and 48 to Prague. Wreckage was scattered widely about the mountainous area, 40 km (25 miles) north of Athens and dense black smoke billowed from several small fires. Only the tail section, bearing the Helios logo, was recognisable among the debris. "I saw many bodies scattered around, all of them wearing (oxygen) masks," one witness told Reuters. Police said 35 fire trucks, eight fire-fighting planes and three helicopters were at the scene, along with 105 special rescue operations officers.