An 80-year-old nun was killed and eight other people injured Wednesday when a bomb exploded in a cathedral in the Ukrainian city of Saporoshye, dpa cited local media as reporting. The explosion coincided with the last day of a controversial visit by Russian Patriarch Kirill. The cathedral belongs to the Moscow patriarchy. The bomb exploded at 4 pm local time (1330 GMT). Details of who may have set the bomb off were not yet known.