Palestinian Prime Minister Rami Hamdallah's convoy hit by explosion

Fishermen sit together on a fishing boat at a shore in Gaza City Gaza

The assassination attempt, he added, was in "concordance" with all attempts to stop the PA government from assuming its responsibilities in the Gaza Strip. Gaza's ruling Hamas group denied involvement.

A White House "brainstorming session" to be held Tuesday on alleviating the acute humanitarian situation in the Gaza Strip will see Israeli officials sit alongside those from key Arab states including Saudi Arabia and the United Arab Emirates.

The Palestinians were enraged by President Donald Trump's decision to break with longstanding U.S. policy by recognising Jerusalem as Israel's capital.

Abbas and other PA leaders had accused Hamas of refusing to "empower" the PA government in the Gaza Strip. "Wishing a speedy recovery to the injured", Greenblatt tweeted.

Hamas said the attack was an attempt to damage Gaza's security and "deal a blow to efforts to finalise reconciliation" between the main Palestinian factions.

"This attack will increase our determination to achieve Palestinian reconciliation and will not dissuade me from continuing to come to Gaza", he said.

An explosion hit the convoy of Palestinian Prime Minister Rami Hamdallah Tuesday in an attack his political party has blamed on rivals, the Islamist militant group Hamas. After the attack, Hamdallah took a tour of a new wastewater treatment plant in Gaza and then returned to Ramallah in the West Bank.

A statement from Hamas also condemned the attack but likewise condemned the response from Palestinian Authority. It promised an "urgent" investigation.

Hamas has controlled Gaza since seizing it from the Palestinian Authority in 2007.

President Donald Trump's Mideast envoy condemned the attack.

The "grave incident must be promptly investigated and the perpetrators brought to justice", Mladenov said.

Nabil Shaath, the foreign affairs adviser of Abbas, told Sputnik in February that the intra-Palestinian reconciliation process had been put on hold as the Hamas movement had not yet relinquished administrative control over the Gaza Strip. The two parties, which fought an bitter internecine war in Gaza in 2007, signed a reconciliation deal in Cairo previous year.

Palestinian sources report that the explosion appears to have targeted the Palestinian PM's convoy as it entered Gaza from the Erez checkpoint.