Video from Al Jazeera news network shows the moment Israeli security forces shot and killed a man who they say stabbed two police officers outside the walled Old City in Jerusalem.

On Friday, 19 February, Israeli security forces shot dead three Palestinian assailants in separate incidents in Jerusalem and the occupied West Bank, police and the military said, as a wave of heightened violence persisted into its fifth month.

In the West Bank, a Palestinian man tried to ram his car into a group of Israeli soldiers who then shot him dead, the military said.

A third Palestinian man was killed by Israeli soldiers in a clash elsewhere in the West Bank, the Palestinian Health Ministry said. An Israeli military spokeswoman said he was armed with an automatic weapon and fired on the troops during a riot.

Between 1 October and 14 December, stabbings, shootings and car rammings by Palestinians have killed 28 people, including 25 Israelis, and Eritrean, US and Palestinian citizens. Israeli security forces have killed at least 167 Palestinians, 110 of whom Israel says were assailants, while most others were shot dead during violent anti-Israeli protests.

The bloodshed has raised concern of wider escalation a decade after the last Palestinian uprising – the Second Intifada – subsided.

Briefing the UN Security Council on Thursday, Nickolay Mladenov, the UN envoy on Israeli-Palestinian peacemaking, said he was concerned the bloodshed may be entering "a new troubling phase".

Mladenov called on both Israeli and Palestinian leaders to provide "a political horizon to their people" and reject incitement by what he called radicals in their own camps.