The White House called for a transparent investigation into the killing of Al-Jazeera correspondent in Palestine, Sherine Abu Akleh, calling on Israel and the Palestinian Authority to share evidence in the investigations. German Vice Chancellor Robert Habeck also condemned the case's closure "quickly".

A White House statement said Tuesday evening that Washington continues to urge the Palestinian and Israeli sides to cooperate and exchange evidence between them regarding conducting a comprehensive investigation into the killing of journalist Shireen Abu Aqleh.

"We affirm our demand for a thorough and transparent investigation into the killing of Shireen Abu Aqleh," he added.

The statement added that the administration of President Joe Biden expects full accountability for those responsible for her murder.

In response to a question by Al Jazeera about Senators John Osoff and Mitt Romney's letter and their call for a comprehensive investigation, the US State Department said that the United States is not currently conducting a formal investigation, adding, "They called for comprehensive, transparent and impartial investigations into the killing of Shirin Abu Akleh."

The Ministry of Foreign Affairs also renewed urging the Palestinians and Israelis to cooperate and exchange evidence.

Senators, Democrat John Osoff, and Republican Mitt Romney had sent a letter to US Secretary of State Anthony Blinken, asking him to ensure a full and transparent investigation into the killing of Shireen, and to hold those responsible for her murder accountable.

The two senators said that Shireen was doing her job as a journalist to report the truth and that her killing was unacceptable.

The lawmakers stressed that the Biden administration has an obligation to ensure that the investigation into Sherine's murder is completed transparently and that justice is served in her case.

This comes days after 56 members of Congress signed a letter calling on the authorities to conduct an investigation into the assassination of the Al-Jazeera correspondent.

The members also said that the State Department described Shireen's killing as an insult to the press, and welcomed the Department's statements and actions taken so far in support of a thorough investigation.

The funeral of Shireen Abu Aqleh in Jerusalem after her murder on May 11 last (Al Jazeera Net)

German demands

On the other hand, German Vice Chancellor and Minister of Economy Robert Habeck called for revealing the circumstances of the assassination of colleague Sherine.

In response to a question for Al Jazeera, the German Vice Chancellor said, "I expect the investigation to be completed and the truth known, but I think that the case was quickly closed. Violence and escalation are unacceptable."

Habek added that every government must work within its territories to prevent violence, and that the Palestinian and Israeli sides must stop violence and that each side see the pain of the other.

In response to the German Vice-Chancellor's statements, Palestinian Prime Minister Muhammad Shtayyeh said that the violence, escalation and killing were caused by the Israeli occupation and prevented the establishment of a Palestinian state, and that the Israeli policy is based on the policy of "striking to kill," as he put it.