FILE PHOTO: German Chancellor Angela Merkel speaks during her Christian Democratic Union (CDU) party colleague and Hesse State Prime Minister Volker Bouffier's campaign rally for the upcoming state election Dieburg, Germany, October 23, 2018. REUTERS/Ralph Orlowski

(Reuters) - German Chancellor Angela Merkel vowed again on Friday to halt all German arms exports to Saudi Arabia until the killing of journalist Jamal Khashoggi was explained.

“It is necessary to clarify the background of this horrible incident,” she said in Prague during a news conference with Czech Prime Minister Andrej Babis. “And if that does not happen, we will not deliver any arms to Saudia Arabia.”