Television footage showed pallbearers struggling to stop Abu Akleh's coffin from falling to the ground as baton-wielding police officers charged towards them
The European Union has urged an "independent" probe while the United States demanded the killing be "transparently investigated," calls echoed by UN human rights chief Michelle Bachelet.
Palestinian authorities called Abu Aqleh's killing an "execution," and part of an Israeli effort to obscure the "truth" about its occupation of the West Bank.