BERLIN (AP) - A German security official says the mail bombs intercepted last week contained 10.58 ounces (300 grams) and 15.11 ounces (400 grams) of the explosive PETN.
The official, who briefed reporters in Berlin on condition of anonymity in line with department guidelines, said Monday that if the bombs had gone off "the explosive effect would have been significant."
One of the packages transited through Germany's Cologne airport before being intercepted at its next stop in England. Another package was intercepted in Dubai.
Germany is now banning passenger flights from Yemen, as well as cargo flights from that country.