a house in the town of Castellammare di Stabia, near Naples. The house had at one time been occupied by Raffaele Imperiale, who Mr. Colangelo said was one of the leaders of the trafficking gang. (Mr. Imperiale is in Dubai, in the United Arab Emirates, Mr. Colangelo said, and Italian authorities have asked for his extradition.)

Lt. Col. Agostino Tortora, a financial police officer who worked on the case, said the paintings were found on Sunday afternoon, wrapped up in a cloth in a small hallway next to a kitchen.

Investigations are underway to determine when the paintings had come into the possession of the clan, he said. “We know they were stolen in 2002, we don’t know when they came here, or if they were stolen specifically for the"Haiti has made progress across several fronts since the devastating earthquake in 2010, and I'm proud of the role the United States has played during this time in helping our Haitian friends," the secretary said in a statement. "The Haitian economy continues to recover and grow, and 96 percent of people displaced by the earthquake and living in internally displaced person camps have left those camps. Even more encouraging is that over 98 percent of these camps have closed."