The Valencia Metro derailment occurred on 3 July 2006 at 1 pm. CEST (1100 UTC) between Jesús and Plaça d'Espanya stations on Line 1 of the Metrovalencia mass transit system. 43 people were killed and <answer>more than ten</answer> were seriously injured. It was not immediately clear what caused the crash. Both the Valencian government spokesman Vicente Rambla and Mayor Rita Barberá called the accident a "fortuitous" event. However, the trade union CC.OO. accused the authorities of "rushing" to say anything but admit that Line 1 is in a state of "constant deterioration" with a "failure to carry out maintenance".
How many people were gravely injured by the derailment?
more than ten