Two stabbing attacks have been launched on Israelis, killing a young woman and gravely wounding a soldier.
The woman was killed at a bus stop in the West Bank and the Israeli soldier injured in Tel Aviv.
Prime Minister Benjamin Netanyahu promised a harsh response, saying he will use all means available and consider even tougher steps to stop the unrest.
The soldier was stabbed at a crowded train station by a suspected Palestinian assailant in Tel Aviv, before the attack outside the West Bank settlement of Alon Shvut in which a woman in her mid-20s was killed.
Police said the assailant stepped out of a car at a bus stop in front of the settlement, then stabbed three people before he was shot by a guard.
Police are investigating whether a lorry was involved in a school bus crash which left more than 20 people, mainly schoolchildren, injured.
Up to 53 children of around 14 years of age were travelling in the bus when it overturned down an embankment on Holme Lacy Road in Hereford shortly after 8.20am yesterday.
Witnesses reported that a lorry was involved in the accident but did not stop. A spokeswoman for West Mercia Police said: "The police investigation into the circumstances of the motoring collision continues and the involvement of another vehicle is currently being investigated."
The force said that 21 children were taken to hospital from the scene and a further five attended later to receive treatment for cuts and bruises.
The female driver is thought to be receiving treatment in intensive care for chest and abdominal injuries.
A BBC Panorama episode about undercover journalist Mazher Mahmood with up-to-date images of the 'Fake Sheikh' was not broadcast last night despite a ruling in the Court of Appeal not to grant him an injunction over the screening.
The BBC said it needed to "evaluate" new information relating to one of the cases in the programme.
Mr Mahmood had launched a last-minute challenge against a High Court judge's refusal on Friday to grant him an injunction.
He claimed that revealing his current appearance would be a breach of his human rights by exacerbating the existing risk to his safety and would impact upon his family life. Yesterday he was refused permission to appeal. Despite the outcome in court, the BBC decided to show another Panorama episode.
RAF drones have carried out their first drone attacks in the war against Islamic State with air strikes in an Iraqi town where a British jihadist carried out a suicide attack three days ago. Large numbers of foreign fighters including, it is believed, other Britons, have also gathered there. Iraqi forces have been carrying out an offensive in an attempt to recapture Baiji, where the country's largest refinery is located, for the last week. On Friday Kabir Ahmed from Derby blew himself up killing eight people, including a senior police officer.
Footballer Ravel Morrison has been cleared of threatening to throw acid in the face of his ex-girlfriend and have her killed. The 21-year-old West Ham midfielder was said to have harassed Reah Mansoor over a four-year period but the Crown Prosecution Service has formally withdrawn the allegation. A not guilty verdict on Morrison's harassment charge was formally recorded yesterday at Manchester Crown Court. Morrison will stand trial at the same court on January 26 on three remaining charges of assaulting Miss Mansoor (19) and her mother.