No one won the latest Mega Millions drawing on Friday night, meaning the jackpot climbs to a staggering $1.6 billion on Tuesday.
Parliamentary elections took place Saturday across the country, but were postponed in the province of Kandahar after a deadly attack on Thursday killed the region's police chief.
The answers remain central to the probe's credibility.
The cause of the Oct. 6 crash was still being investigated by federal authorities.
Jamal Khashoggi disappeared on Oct. 2 after visiting the Saudi consulate in Istanbul.