The suspect, reportedly living illegally in Jerusalem, was found to have shared inflammatory content on social media that glorified Hamas and encouraged violence.
Witkoff told Fox that implementation of the deal, which took effect on Sunday, would be more difficult than its execution.
Iranian Vice President for Strategic Affairs Mohammad Javad Zarif also said that Iran was meant to meet with the US on October 9 over nuclear agreement talks.
Iranian cargo vessels will reportedly carry over 1,000 tons of sodium perchlorate, a key ingredient to make missile propellant.
The terrorist passed checks both when applying for his visa and in Ben-Gurion Airport after being blocked by an immigrations officer.
He suggested various ways in which the combat tactics from the Gaza Strip could be implemented in the northern West Bank.
The vessel's crew is made up of 25 nationals from Bulgaria, Ukraine, the Philippines, Mexico and Romania, the ship's owner Galaxy Maritime said.
The suspected attacker is a 28-year-old Afghan national.
The 33-year-old man Camperdown was arrested Tuesday in a Strike Force Pearl raid on two addresses in the area.
Syria in spotlight as officials from the Gulf, Iran and Egypt gather in Switzerland for World Economic Forum.
