Here's an Italian story on the same search today. Again, although my Italian is better compared to my non-existent French, I used Google translator.
http://www.foggiaweb.it/ultimenotizie/?p=22308
No resolution in the investigation of the disappearance of Alessia and Livia Schepp, the twins swallowed in the dark since last February 3, from when their father, Matthias, a Swiss engineer, took his own life jumping under a train station on track Cerignola.
This morning the search resumed along the rail: Investigators are hunting the recorder, a real voice recorder, on which Matthias recorded his every thought, every feeling.
The search, which lasted an hour, from 9:20 to 10.20, recovered three AA batteries and a set of headphones that could belong to his recorder. The photos of the components will soon be sent to the parent company of Milan for the analysis of the case.
Last week, on these same tracks, investigators found an electronic component, probably the power supply and wires that could be those of the headset or microphone dictaphone.
The agents of mobile Foggia, assisted by volunteers, will resume searching in the coming days with the hope to be able to retrieve the cassette recorder on which Schepp may have left important phrases that could lead investigators to the discovery of two missing Swiss sisters.
Meanwhile, the microchip of the navigation system recovered a few weeks ago did not provide useful information to reconstruct the route taken by Schepp from Switzerland to Cerignola. The chip was sent to Korea where the company that makes that particular component is located. (Tatiana by Bellizzi Teleradioerre)