Jihad al-Jafari, 19, was killed by Israeli troops on Feb. 23, 2015. Via Muhanad Qaisy

Medics conducted an autopsy on Jafari at the Abu Dis forensic institute near East Jerusalem. Sabri al-Aloul, a forensic expert who read the autopsy report, said it showed the victim had been killed at close range by a bullet from a M16 rifle, according to Ma’an News Agency.

Aloul described Jafari’s death as "similar to an execution."

The Israeli army confirmed that a shooting occurred inside the camp, saying troops opened fire after coming under attack.

An Israeli military spokeswoman said that Palestinians hurled rocks, firebombs and other objects at the troops, wounding one soldier. "The force, feeling imminent danger to their lives, responded with fire toward an instigator," she said.

Thousands of Bethlehem residents mourned Jafari’s death at a procession preceding his burial late Tuesday. In a show of respect to the deceased teenager’s family and to protest the killing, area stores and schools closed.

"He was a very nice person," said Qaisy. "The soldiers had no reason to kill him. He was innocent. A simple, lovely kid."

While marching, some Palestinians threw stones at Israeli troops and denounced what they said are routine, deadly raids on refugee camps.

Established in 1949, the UNRWA-administered Dheisheh refugee camp is home to an estimated 13,000 Palestinians uprooted from 45 villages by Israeli forces during the war of 1948 and successive conflicts. Along with the rest of the West Bank and East Jerusalem, it is under Israeli military occupation.

Al Jazeera and wire services. Nadeem Muaddi contributed to this report.