Israel soldier, two Palestinians dead in West Bank clashes
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"An IDF (army) officer was killed overnight during operational activity adjacent to the Gilboa Crossing during an exchange of fire with Palestinian terrorists," an army statement said.
Security has been tightened as Israeli football club Maccabi Haifa host French giants Paris Saint-Germain in a Champions League tie later Wednesday at their base just 60 kilometres (40 miles) from Jenin.
Wednesday's deaths are the latest in a flare-up that began in mid-March.
There have been deadly attacks on Israeli targets, mostly by Palestinians. In response, Israel has launched near nightly raids on West Bank towns and cities that have killed dozens of Palestinians, including fighters.
Last week, armed forces chief Lieutenant General Aviv Kohavi said "around 1,500 wanted people were arrested and hundreds of attacks prevented" in the operations.