Britain said on Tuesday questions remained over the killing of journalist Jamal Khashoggi, and only Saudi Arabia could provide answers to them, according to Reuters.

"President Erdogan's statement this morning underscores the fact there remain questions which only the Saudis have the answers to," Prime Minster Theresa May's spokesman said when asked about an earlier statement by Turkish President Tayyip Erdogan on the killing.

Saudi Arabia will hold to account those responsible of journalist Jamal Khashoggi's killing and those who failed in their duties, whoever they are, the Saudi cabinet said after a meeting chaired by King Salman on Tuesday.