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Three Palestinians have been shot and injured by Israeli troops in recent days while collecting rubble near the Gaza  Strip's border with Israel.

Many young Palestinians scour the area to gather the bricks and stones from demolished homes to sell to help them scratch out a living.

A UN report says that at least 25 Palestinians have been killed and scores of others injured by Israeli gunfire along the border since last year. Doctors say about one-third of the victims are under the age of 18.

Human rights groups in Gaza and Israel have threatened to launch a legal challenge over what they describe as Israeli violations of the buffer zone.

Al Jazeera's Nadim Baba reports from Beit Hanoum in Gaza.

Source: Al Jazeera