The EU and EU Missions in Jerusalem and Ramallah reiterated that they "continue to promote and protect the rights of the child" and called on Israel to "act accordingly, as the occupying power and duty bearer, in relation to the occupied Palestinian territories as they fall under Israeli military law".
Soldiers open fire on stone-throwing demonstrators in Gaza and the West Bank, killing two teens and wounding others.
He died in clashes that erupted in the Tel and Iraq Burin villages of southern Nablus in the northern West Bank.
Tensions were already high ahead of Friday's protests after two 16-year-old Palestinians were killed in clashes with the IDF on Thursday.
In December, the Israel Security Agency documented a near tripling of terrorist attacks against Israelis last month, reaching a two-year high of 249 incidents.
Israel captured eastern Jerusalem - which includes Judaism's holiest sites of the Temple Mount and the Western Wall in the Old City - and the West Bank in the 1967 defensive war, seizing it from Jordanian occupation and reuniting the city.
At least 17 Palestinians have been killed and thousands more injured in the wave of protests that have gripped the West Bank and Gaza following Trump's decision, with hundreds of Palestinians voicing their indignation with the move every week after Friday prayers.
A further 200,000 live in East Jerusalem, annexed by Israel in a move never recognised by the global community.