Spanish officials are investigating the mysterious deaths of a Russian gas executive, who was found hanged outside his Spanish villa, and his wife and daughter who were both discovered hacked to death inside the property. Investigators are said to be working on the assumption that Sergey Protosenya, 55, killed the two women with an axe and knife, before taking his own life in the courtyard of his Lloret de Mar villa on Spain's Costa Brava. However, local reports said evidence does not conclusively point towards this explanation, as no suicide note was found in the property and it appeared steps...