Security sources revealed Strasbourg terror suspect Cherif Chekatt received a call from a German number moments before the deadly attack on a Christmas market in France.
The sources said Chekatt, 29, had received the call just before gunning down tourists and shoppers at the world-famous Christmas market but did not answer, according to Deutsche Welle.
The call could provide authorities with clues as to his connections and to whom he may have fled if he crossed the nearby border from France into Germany.
A further revelation came from a neighbour, speaking to the Associated Press on condition of anonymity, who said she saw Chekatt, who she said was rarely at home, speaking to an unknown man in the hallway on Monday, the day before the attack.