DUMA, West Bank (AP) — Suspected Jewish assailants attacked a Palestinian village in the West Bank early Friday and torched two homes, hurling fire bombs inside and setting off a blaze that killed a toddler and critically wounded his 4-year-old brother and parents.

Israeli Prime Minister Benjamin Netanyahu called the incident a "terror attack," while the Palestinians blamed Israel for allowing such violence to go unchecked in the West Bank.

According to the Israeli military, the suspects entered the village of Duma, near the city of Nablus, where they set the homes ablaze and scrawled graffiti, including "Long live the Messiah," ''revenge" and "price tag" and then fled the scene.

The slain child was identified as one-and-a-half year old Ali Dawabsheh. His four-year-old brother and parents were seriously hurt, according to Gassan Daghlas, a Palestinian official from the Nablus area.

Daghlas said Jewish settlers broke the window of a house and flung a fire bomb inside, "causing a quick and huge fire." The Israeli military said three people were critically wounded and one was slightly injured. The critically wounded were taken to Israeli hospitals for treatment, the military said.

The interior walls of the one-floor home were blackened and still radiated heat as Israeli police surveyed the scene later on Friday morning. A brown couch was covered in white ash as charred debris lay strewn around the property. A second house nearby, which was empty, was also set on fire.

The violence touched at the heart of Palestinian fears that such attacks by militant Jewish settlers in the West Bank go unpunished and are allowed by Israel to continue, although Israel says it does its best to track down assailants. Palestinian officials blamed Israel for the attack.

"The settlers are committing their crimes under the protection of Netanyahu's government. Netanyahu's government provides the settlers all they need and oppress the Palestinian people," said Mahmoud al-Aloul, an aide to Palestinian President Mahmoud Abbas.

Inside the torched home, relatives scraped through the ash and soot to salvage any belongings. They found a partly burned picture of the killed child and his bottle, still one-third full of milk.

Mohammed Ibrahim Dawabsheh, a neighbor, said he saw the mother running out of the house on fire and then covered her with a sheet to try to extinguish her flaming body. His son, Ibrahim, said he saw two masked men flee the scene. Another neighbor, Mohammed Dawabsheh, said he tried to push into the blaze to save the child but the flames were too strong.

"I never imagined that this could happen, that someone could come and burn people alive while they are sleeping," said Hassan Dawabsheh, the slain child's uncle. "I don't know what those people were thinking. What do they have inside their hearts and minds?"

The Israeli military said it sent troop reinforcements to the West Bank, fearing the incident could trigger unrest. Hamas, the militant Islamic group that rules Gaza, called for a day of rage over the incident.

Jewish extremists have for years attacked Palestinian property, as well as mosques, churches and even Israeli military bases in opposition to what they see as the Israeli government's favorable policies toward the Palestinians, although it is rare for anyone to be killed in such attacks.

Friday's incident comes after Israel this week demolished homes in a West Bank settlement built without prior authorization. Israel shortly after announced plans for new settler homes in the same settlement and elsewhere.

Critics say police have been slow to apprehend the Jewish assailants and Palestinians say the military has failed to protect them from attacks by militant Jewish settlers in the West Bank.

The attacks, known as "price tag," have been condemned across the Israeli political spectrum and condemnations came swiftly Friday, with Netanyahu issuing a stern statement against the violence.

"I am shocked over this reprehensible and horrific act. This is an act of terrorism in every respect. The State of Israel takes a strong line against terrorism regardless of who the perpetrators are," he said.

Israeli military spokesman Lt. Col. Peter Lerner called the incident "nothing short of a barbaric act of terrorism."

Israeli Defence Minister Moshe Yaalon said Israel would not allow "Jewish terrorists" to carry out such acts.

"We will not allow Jewish terrorists to harm the lives of Palestinians in Judea and Samaria," he said in a statement, referring to the West Bank by its biblical name. "We will fight against them firmly and with all means and tools at our disposal."

Meanwhile, Israeli police said they would restrict entrance to Friday prayers at a Jerusalem mosque, permitting only male worshippers over the age of 50. There were no restrictions on women. Police said the decision was not necessarily related to the West Bank incident and comes as police received word that Palestinian youth at the mosque planned to cause disturbances.

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Associated Press writer Tia Goldenberg contributed to this report from Tel Aviv, Israel.