The Israeli Prime Minister Ehud Olmert's office said this evening that ministers expressed 'disappointment and reservation' over a list of prisoners Hamas has demanded to be freed in exchange for a captured Israeli soldier.
Mr Olmert convened a first meeting with the heads of Israel's security establishment to discuss the list, which Egyptian mediators handed to Israel last week.
Corporal Gilad Shalit was captured on 25 June last year when militants tunnelled out of Gaza and attacked an army border post.
The raid sparked a deadly Israeli air and ground offensive against the Gaza Strip that killed several hundred Palestinians before a November ceasefire came into force.
Israel has said that many of the listed prisoners had 'blood on their hands,' meaning they had been involved in attacks that killed Israelis.
Israel has said it will not release such detainees, but in recent days some ministers have called for the government to reconsider that position.