The Palestinian Authority has said that its investigation into the shooting death of Al Jazeera journalist Shireen Abu Akleh proves she was deliberately killed by Israeli forces.

Israel is likely to reject the findings as biased and unfounded.

The Palestinian attorney general, Akram Al Khateeb, announced the results of the investigation at a news conference in the West Bank city of Ramallah.

“The only shooting was by the occupation forces, with the aim of killing,” he said.

Ms Abu Akleh, a veteran Palestinian/American reporter for Al Jazeera’s Arabic service, was shot in the head on May 11 during an Israelimilitary raid in the occupied West Bank.

Witnesses and Palestinian officials have said she was hit by Israeli fire. Israel says she was shot during a battle between its soldiers and Palestinian militants. It says that only a ballistic analysis of the bullet – which is held by the Palestinian Authority – and the soldiers’ guns can determine who fired the fatal shot.

Mr Al Khateeb said his investigation had determined there were no militants in the area and claimed the army saw Ms Abu Akleh and other journalists and knew they were journalists. The group were all wearing protective vests and helmets at the time.

He claimed that Ms Abu Akleh was shot “directly and deliberately” as she tried to escape.

He repeated the Palestinian position that the bullet would not be handed over to the Israelis for study. He said they had decided not to even show images of the bullet “to deprive them of a new lie”.

An AP reconstruction of events has lent support to witnesses who say she was shot by Israeli troops, even though she was wearing a helmet and vest that clearly identified her as media. But the reconstruction said it was impossible to reach a conclusive finding without further forensic analysis.