Argentinian police have said they will continue hunting for an old master painting looted by the Nazis and spotted by chance in an estate agent’s listing after a search of the property in the seaside town of Mar del Plata failed to uncover the work. “The painting is not in the house … but we’re going to keep searching for it,” the federal prosecutor Carlos Martínez told local media. He said items that could be useful for the investigation, including two firearms, engravings and prints, had been seized. Citing investigators, the Argentinian newspaper La Nación reported that the missing work,...