Xinhua Middle East news summary at 2200 GMT, Nov. 23

JERUSALEM -- Israel's police were boosting forces throughout Jerusalem on Wednesday after twin blasts shook the city, killing an Israeli-Canadian teenager and injuring at least 18 others.

The blasts were caused by explosive devices, according to a statement issued by the police. One of them went off at a busy bus stop near the entrance of the city during the morning rush hour while the second device exploded about half an hour later at another bus station in Ramot, a settlement neighborhood in northern Jerusalem. (Israel-Security Forces-Twin Blasts)