Arnaud said forensic testing had determined that the bomb was an “organic explosive” detonated using a circuit board fitted with a sim card and triggered by a mobile phone message. “It was clear to us that whoever carried out this crime had probably shadowed the victim very closely,” Arnaud said, since Caruana Galizia’s movements were unpredictable and the journalist followed no set routine. The sim card had been contacted by a mobile phone located at sea by triangulation data, Arnaud said. Both numbers had been activated in November last year and had exchanged just four text messages – including the one that detonated the bomb. One, the Maya, was recorded on CCTV camera leaving Malta’s Grand Harbour at 8am on the morning of Caruana Galizia’s killing and not seen returning until after 3pm.

Source: The Guardian December 19, 2017 19:09 UTC