Paris / Madrid (AP) - After the heavy explosion in the middle of Paris, the number of dead according to official figures has risen to three. In addition to two firefighters, a Spanish tourist had died, said a spokeswoman for the French Interior Ministry. The explosion occurred in the morning in the Rue de Trévise, about a kilometer away from the Paris Opera House. According to French Interior Minister Christophe Castaner, nearly 50 people were injured, ten of them seriously. The authorities assume an accident due to a gas leak.