(ISTANBUL) — In a sign of growing pressure on Saudi Arabia, Turkey said it will announce details of its investigation into the killing of journalist Jamal Khashoggi on Tuesday and U.S. congressional leaders said the Gulf kingdom — in particular its crown prince — should face severe consequences for the death of the writer in the Saudi consulate in Istanbul. The announcement on Sunday by Turkish President Recep Tayyip Erdogan that he will “go into detail” about the Khashoggi case in a speech in parliament heightened hopes for some clarity in a case that has been shrouded in mystery, conflicting accounts and shocking allegations since Khashoggi, a critic of Prince Mohammed bin Salman, disappeared after entering the consulate on Oct 2. Erdogan spoke after Saudi Arabia, in a statement early Saturday, finally acknowledged that 59-year-old Khashoggi had died in the consulate, though its explanation that he was killed in a “fistfight” was met with international skepticism and allegations of a cover-up designed to absolve Prince Mohammed of direct responsibility.