Palestinian police stand outside the gate of Joseph's Tomb neasr the West bank city of Nablus. A Jewish man was shot dead by Palestinian police as he was on his way to pray at the holy shrine, together with friends, early this morning. April 24, 2011. Photo by issam Rimawi/FLASh90

Masked Palestinian youth burn tires and throw stones in Joseph's Tomb during clashes with Israeli troops nearby, in the West Bank city of Nablus. Palestinians shot and killed one Israeli and wounded two others early Sunday near Joseph's Tomb, a Jewish holy site inside the Palestinian city of Nablus. April 24, 2011. photo by Issam Rimawi/FLASh90

Masked Palestinian youth burn tires and throw stones during clashes with Israeli troops nearby, in the West Bank city of Nablus. Palestinians shot and killed one Israeli and wounded two others early Sunday near Joseph's Tomb, a Jewish holy site inside the Palestinian city of Nablus. April 24, 2011. photo by Issam Rimawi/FLASh90

A motorcyclist wearing a t-shirt calling for the release of captured Israeli soldier Gilad Shalit stands outside a protest tent set up near Prime Minister Netanyahu's residence in jerusalem. Gilad Shalit has been held captive by Hamas militants since June 2006. April 24, 2011. Photo by Miriam Alster/Flash90.

A young girl looks at a painting depicting captured Israeli soldier Gilad Shalit, outside a protest tent set up near Prime Minister Netanyahu's residence in jerusalem, calling for the release of Gilad Shalit. Gilad has been held captive by Hamas militants since June 2006. April 24, 2011. Photo by Miriam Alster/Flash90.

Israelis stand a protest tent set up near Prime Minister Netanyahu's residence in jerusalem, calling for the release of captured Israeli soldier Gilad Shalit. Gilad has been held captive by Hamas militants since June 2006. April 24, 2011. Photo by Miriam Alster/Flash90.