Jerusalem rocked by suspected bomb explosion on bus

Investigation under way after explosion in south-west of city leaves at least 21 people injured, two of them seriouslyA suspected bomb explosion on a Jerusalem bus has injured 21 people, two of them seriously.The explosion, which if confirmed as the result of a bomb would be the first in Jerusalem since the end of the second intifada a decade ago, gutted the number 12 Egged bus and set fire to a second passing bus and car. Most of the injuries occurred when the second bus was caught in the blast