Palestinian relatives of Ahmed Al-Fahid, who was killed by Israeli troops, mourn during his funeral in al-Am'ari refugee camp. Reuters

A Palestinian man was shot and killed by undercover Israeli forces early on Tuesday near Ramallah, where the Palestinian Authority is headquartered, according to the PA's official Wafa news agency. Pictures circulating online appeared to show the man, identified as Ahmed Jamil Fahed, bloodied and lying in the street. The Israeli army referred questions to the Border Police, which did not respond to requests for comment.

Palestinians carry the body of Ahmed Al Fahid, who was killed by Israeli troops, during his funeral in the West Bank. Reuters

Israeli forces shot dead a knife attacker in Jerusalem on Monday, police said, as Washington's top diplomat departed for a Middle East trip aimed at consolidating the ceasefire between Israel and Hamas in Gaza.

US Secretary of State Antony Blinken has arrived in Israel at the start of a Middle East tour aimed at shoring up the Gaza cease-fire , days after an Egypt-brokered truce halted the conflict between the Jewish state and the Gaza Strip's rulers Hamas.

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US President Joe Biden said his top envoy will meet "with Israeli leaders about our ironclad commitment to Israel's security," as well as seeking to rebuild ties with the Palestinians.

In a tweet, Blinken said the trip would aim to support "efforts to solidify a ceasefire".

Israeli security forces and emergency services gather around the body of an assailant in Jerusalem. AFP

While Gaza was calm on Monday, Israeli police said an attacker stabbed two young Israeli men in Jerusalem before police shot him dead.

Palestinian news agency WAFA said that Israeli forces had shot dead a 17-year-old Palestinian high school student from occupied east Jerusalem.

Hadassah medical centre in Jerusalem said it was treating two men in their twenties for stab wounds.

Both were in a stable condition, and one was identified by the Israeli army as a soldier.

The 11-day conflict with Hamas in Gaza sparked inter-communal tensions in Israel itself between Jewish and Arab citizens of Palestinian descent, and amplified protests across the occupied West Bank.

Overnight Israeli forces rounded up 43 Palestinians in the West Bank and annexed east Jerusalem, the Palestinian Prisoners Club rights group said.