Israeli troops have shot dead a mentally ill Palestinian during a raid in Jenin refugee camp in the West Bank.
It is the biggest raid in Jenin for almost a year
The man's death came as Palestinians prepared to mark the fourth anniversary of their intifada against the Israeli occupation in the West Bank and Gaza.
An Israeli military source said the man was climbing a fence surrounding an army outpost and refused calls to stop.
The operation is said to be the biggest in Jenin for months with hundreds of Israeli troops searching houses.
An Israeli military source said soldiers were looking for militants and explosives in the Jenin refugee camp.
Israeli officers' criticism
Medics said Saleh Bilalu, who is known to have a history of mental illness, died of a bullet wound to the chest.
Israeli military sources had earlier told Israel radio that he had been climbing up a house occupied by troops who shot him in the legs and he had been killed by the fall.
Israel's policies in the occupied territories have came under fire from four senior members of an elite Israeli air force unit who describe the military's action as "immoral".
In a letter published by Israeli newspapers on Tuesday, the four expressed special concern about the demolition of Palestinians' houses, but included other examples of alleged collective punishment of the Palestinian population.
The letter said they wanted to spark debate about army operations, and distanced themselves from so-called refuseniks - those Israelis who refuse to serve in the West Bank and Gaza.