Israel sent more troops to the West Bank on Saturday, a day after a Palestinian stabbed to death three members of an Israeli family in their home and widespread Israeli-Palestinian clashes erupted over escalating tensions at the Holy Land's most contested shrine.

The 20-year-old Palestinian assailant wrote in a pre-attack Facebook post that he planned to avenge what he alleged was Israel's "desecration" of the Jerusalem holy site.

Turkey's official news agency says a court has reissued detention warrants for four human rights activists who were released earlier this week.

Anadolu news agency said the court on Friday accepted an objection filed by the Istanbul prosecutor's office to the activists' release. The four activists were initially released Tuesday after surrendering their passports and they were required to regularly present themselves at a police station.

President Donald Trump's eldest son and his former campaign chairman won't testify publicly next week and are instead discussing being privately interviewed by a Senate committee investigating Russia's meddling in the 2016 election, the panel said.

The committee initially called for Donald Trump Jr. and Paul Manafort to appear publicly Wednesday. But the top Republican and Democrat on the Senate Judiciary Committee now say the men are negotiating the terms of their appearances, and lawmakers don't currently plan to issue subpoenas to force them to appear.

Iranian state TV is reporting the inauguration of a production line for a new version of an air defense missile.

The Saturday report said the missile dubbed Sayyad-3 is an upgrade to previous versions of the missile. Sayyad means "hunter" in Farsi.

Hundreds of people on the eastern Greek island of Kos have spent the night sleeping outdoors after a powerful earthquake killed two tourists and injured nearly 500 others across the Aegean Sea region in Greece and Turkey.

Residents and tourists were too afraid to return to their homes and hotels, camping out instead in parks and olive groves, or slumbering in their cars or on lounge chairs.

Stabbings and clashes that left six people dead raised fears on Saturday of further Israeli-Palestinian violence as tensions mount over new security measures at a highly sensitive Jerusalem holy site.

Friday's violence -- a stabbing attack that killed three Israelis and clashes which left three Palestinians dead -- was among the most severe in recent years.

Prime Minister Saad Hariri received a telephone call from Lebanese IT expert held in Iran, Nizar Zakka, asking him for the government's intervention to have him released from prison, Hariri's media office said on Friday.

Zakka, who has been held in Iran for nearly two years, described the difficult conditions of his detention and his deteriorating health and asked the Lebanese government to intervene to obtain his liberation.

MP Assem Araji stressed on Friday that the Lebanese army is the sole side authorized to defend the country's border.

“The army is the sole side authorized to confront armed groups and defend the border” said Araji, adding that “the military institution enjoys full (people's) support in order to preserve the security in Arsal and the safety of the displaced,” said Araji in an interview to VDL (93.3).

The Lebanese army on Friday upped its security measures in the northeastern border town of Arsal to keep militants from infiltrating into the town, as Hizbullah launched an offensive against jihadists in the border area, media reports said.

Linkin Park lead singer Chester Bennington, who sold millions of albums with a unique mix of hard rock, hip-hop and rap, was found dead in his home near Los Angeles on Thursday, the Los Angeles County coroner says. He was 41.

Coroner spokesman Brian Elias said authorities are investigating Bennington's death as an apparent suicide but no additional details are available.