NABLUS, Palestinian Territories (AFP) - Israeli troops killed a member of the Palestinian security forces in an exchange of fire in the northern West Bank overnight, sources on both sides said on Thursday.

"During an ambush organised to arrest an armed man... who had fired on Israeli soldiers several times in recent weeks, the man opened fire on soldiers, who fired back," the Israeli army said.

"We later learnt that he had been killed." Palestinian security sources identified the dead man as intelligence officer Saleh Yasin, 29.

He was on his way home when he was ambushed by the Israeli soldiers, the sources said.

Another Palestinian was shot dead by the Israeli army, and several others wounded, in clashes that erupted following a similar arrest operation in Jenin, also in the northern West Bank, on Wednesday evening, sources on both sides said.

Palestinian security sources named the man killed in that exchange as Nafaa al-Saedi, 23, of the radical Islamic Jihad movement.

The deaths brought to 28 the number of Palestinians killed by Israeli forces this year, the great majority of them in the occupied West Bank, according to an Agence France-Presse tally.