An investigation by Al Jazeera Media Network revealed Thursday the type of the bullet that was used in the assassination of Shireen Abu Akleh.

According to experts, the bullet was designed to pierce armor and is used in an M4 rifle.

The investigation indicated that the bullet was 5.56mm – the same used by the Israeli Occupation Forces (IOF).

Also Read: Al Jazeera correspondent killed by Israeli Occupation Forces in Jenin

On May 11, 2022, Al Jazeera veteran journalist, Shireen Abu Akleh, 51, was killed after being shot by the Israeli Occupation Forces while covering an Israeli Occupation army raid in the occupied West Bank.

Earlier this month, US Secretary of State Antony Blinken promised to pursue accountability over the killing of journalist Shireen Abu Akleh wherever facts lead, amid heated dispute between Israeli Occupation and Palestinian authorities on how she died, according to AFP.

Also Read: Blinken says US will 'follow facts' on Abu Akleh killing

Appearing at a forum for student journalists on the sidelines of a Latin America summit in Los Angeles, Blinken was confronted by a question on why there have been "absolutely no repercussions" for Israeli Occupation, a historic US ally.

"I'm sorry, with respect, they have not yet been established," Blinken said of the facts behind the case.

"We are looking for an independent, credible investigation. When that investigation happens, we will follow the facts, wherever they lead. It's as straightforward as that," he said.

Blinken, who has spoken to her family, said: "I deplore the loss of Shireen. She was a remarkable journalist, an American citizen."

A Palestinian probe said that an Israeli Occupation soldier shot her dead in what it described as a war crime. A CNN report, quoting witnesses most of whom are journalists as well, also said that she was killed in a targeted attack by Israeli Occupation forces, as they were targeting her as well as other journalists.