Israel said on Thursday it was beefing up its forces along its frontier with the Gaza Strip, in what it called a defensive deployment in response to persistent Palestinian cross-border rocket attacks.
Israel also faced the challenge of a further eruption of Palestinian anger in Jerusalem, where violent protests broke out on Wednesday after the body of a 16-year-old Palestinian boy was discovered in a forest on the edge of the city.
Israeli police are investigating the possibility that he was the victim of a revenge killing over the deaths of three Jewish teenagers, whose abduction on June 12 Israel was blamed on Islamist Hamas militants in the occupied West Bank.
Lieutenant-Colonel Peter Lerner, a military spokesman, said troops were taking up "defence positions" in Israeli communities that have been struck by the rockets from Gaza. He did not comment on the scale of the deployment.
It is the first time since the border began to heat up in mid-June - in tandem with an Israeli military sweep and search for the three abducted Israeli youths in the West Bank - that Israel has announced troop movements near the Gaza Strip.
"We are moving and we have moved forces," Lerner said in a conference call with foreign journalists. "Everything we are doing is to de-escalate the situation but on the other hand to be prepared if they don't de-escalate." Israel, he said, has "no interest in deepening the conflict with Gaza - the absolute opposite is true".
Jerusalem was quiet on Thursday but tensions remained high in anticipation of Mohammed Abu Khudair's funeral. No time has been set for the burial, an event that will stir strong emotions among Palestinians and could trigger further confrontation.
The military said Palestinians in the Gaza Strip fired 14 projectiles into Israel on Thursday and that rockets struck two homes in the southern town of Sderot, causing no casualties.
Israel launched air strikes against at least three Hamas training facilities in Gaza, residents said, adding that 15 people had been injured.
U.N. human rights chief Navi Pillay condemned both Israelis and Palestinians on Thursday for the latest flare-up of violence across the Gaza border and also Abu Khudair's killing.
"From a human rights point of view, I utterly condemn these rocket attacks and more especially I condemn Israel's excessive acts of retaliation," Pillay told journalists in Vienna.
The Palestinian youth Abu Khudair was last seen alive being bundled into a van on Wednesday near his home in the Arab neighbourhood of Shuafat in Jerusalem, a day after the burials of the Jewish teenagers, who were abducted on June 12.
Abu Khudair's family said police, who have stepped up patrols in the city, told them the body would be released in the pre-dawn hours of Friday.
A police spokeswoman gave no details of the investigation, other than to say a forensic examination was still underway. She declined to say when the body would be handed over.
Palestinian President Mahmoud Abbas, who accused Jewish settlers of killing the teenager, spoke by telephone with the youth's father on Thursday.
"Mohammed is one of the martyrs of this great people," Abbas said, according to the official Palestinian news agency, WAFA.
Israeli Prime Minister Benjamin Netanyahu, in a statement on Wednesday, called the killing a "loathsome murder" and urged all sides not to take the law into their own hands.
The killing of Abu Khudair also drew international condemnation and the United States urged Abbas's Palestinian Authority to "take all necessary steps to prevent an atmosphere of revenge and retribution".