One of the stun grenades landed near Hanan Ashrawi, a member of the Palestinian cabinet.
Images also showed dozens of spent canisters of tear gas and stun grenades.
The police have responded with tear gas, birdshot and stun grenades, coming under attack as they attempt to clear the barricades.
Anarchist youths tore up chunks of paving stone and threw them at riot police, who fired back with tear gas and stun grenades.
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Stone-throwing protesters in the West Bank towns of Hebron, Ramallah, Nablus, Jenin and elsewhere faced off with Israeli soldiers deploying tear gas and stun grenades.
Stun grenades and rubber bullets were also used to disperse the protesters, while helicopters circled overhead and interior ministry officers filmed the clashes, the journalist said.
The protesters gathered on the side of a motorway outside Mishref, but security forces quickly moved in and fired tear gas, and reportedly also stun grenades.
In another incident in Tikrit, police detained four people wearing Iraqi police uniforms who they said had thrown stun grenades at voters outside a polling center.
Police also detained four people wearing Iraqi police uniforms who they said had thrown stun grenades at voters outside a polling center in Tikrit, Saddam's hometown.
The area around the city centre's largest mosque had turned into a battleground as police reacted to stone-throwing rioters with tear gas, stun grenades, rubber bullets and truncheons.
At the West Bank border crossing between Beitunya and Ofer military prison, Palestinian protesters threw rocks while the Israeli military used tear gas, rubber bullets and stun grenades.
At about 2145 BST, eyewitnesses reported seeing the sky light up with green flashes at the same time as the four explosions, which were thought to be stun grenades.
At one point, as riot police briefly used tear gas and stun grenades to block protesters from approaching the parliament building, it looked as if the visit might backfire disastrously.
One witness, Molaole Montsho, of the South African news agency Sapa, said police had first used water cannon, tear gas and stun grenades in an attempt to break up the protest.
Israeli troops fired tear gas and stun grenades to disperse a demonstration of several hundred Palestinian women who had marched on an Israeli checkpoint between Ramallah on the West Bank and Jerusalem.
Sporadic violent clashes were continuing in the capital in the early hours of Thursday between masked protesters - armed with stones and sticks - and riot police firing tear gas and stun grenades.
Palestinian protesters burned tyres and threw rocks, while police fired stun grenades and tear gas, as rioting broke out in a number of areas, including the Shu'fat refugee camp, al-Eisaweyah and the Qalandia checkpoint between Israel and the West Bank.
To ward off anticipated Palestinian demonstrations in the wake of the UN vote in New York, Israeli soldiers armed with stun-grenades, tear-gas and a foul-smelling liquid known as skunk have moved into settlements near Palestinian towns.
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