ISTANBUL (AP) — Saudi journalist Jamal Khashoggi was strangled as soon as he entered the Saudi consulate in Istanbul as part of a premeditated killing, and his body was dismembered before it was removed, a top Turkish prosecutor said Wednesday.

Chief Istanbul prosecutor Irfan Fidan's office also said in a statement that discussions with Saudi chief prosecutor Saud al-Mojeb over the killing yielded "no concrete result" despite Turkey's "good-intentioned efforts to reveal the truth."

The statement was the first public confirmation by a Turkish official that Khashoggi was strangled and mutilated...