During a phone-in with the talk show "al-Hekaya" (The Story), on MBC, on Monday, Adib said that the visit confirms that the "alliance of moderation" between Egypt and Saudi Arabia, UAE and Bahrain is "strong and continuous:", evidenced by the strong participation of these countries in the investment conference in Riyadh, as well as in the "Arab Shield 1" maneuvers.
In Cairo, Egyptian President Abdel Fattah al-Sisi praised the "unshakable strategic alliance between Egypt and Saudi Arabia" during Mohammed bin Salman's visit there, the state-run newspaper al-Ahram reported on Tuesday.
The official welcome contrasted with hostile protests by non-governmental representatives and leftist political parties with more than 200 protesters on Tuesday to cries of "Tunisia is not for sale".
Saudi Arabia has faced intense global criticism over the killing of loyalist-turned-critic Khashoggi in its Istanbul consulate on 2 October.
The group said that by allowing and welcoming bin Salman's presence at the summit, state leaders would be sending a "negative message" to the free world.
"We submitted this info to Argentine prosecutors with the hopes they will investigate MbS' complicity and responsibility for possible war crimes in Yemen, as well as the torture of civilians, including Jamal Khashoggi", said HRW's Middle East and North Africa director Sahara Leah Whiston.
The crown prince told Tunisian state television that Saudi Arabia has long had good relations with Tunisia, adding, "I can not come to North Africa without visiting Tunisia.Tunisia's president is like my father".
Prince Mohammed's current tour comes ahead of his participation in the G20 summit in Argentina, starting on Friday.
His visit will be the first by a Saudi royal to Tunisia since the 2011 revolution deposed longtime ruler Zine el-Abidine Ben Ali, who fled to Saudi Arabia.
His group tried to seek a court order blocking the prince's visit.
Argentina has not issued any official comment on HRW's request.
The Tunisian journalists' union and a collective of 50 lawyers have filed two legal complaints against the prince for alleged crimes against humanity in Yemen, where a Saudi-led coalition is fighting Shiite rebels, and repression of freedom of expression.