Saudi forces were able to successfully target the senior official with the Houthi Ansarullah movement, Saudi ambassador to the United States, Prince Khaled bin Salman tweeted on Tuesday.
Khaled said his brother, Crown Prince Mohammed bin Salman, who is also the Saudi defense minister, oversaw the attack, which came after Samad threatened to launch missile strikes in retaliation for Riyadhs deadly bombardments.
Samad lost his life as his residence in the Red Sea port city of Hudaydah was pounded on Thursday.
He was number two on the Saudi-led coalitions most-wanted list and the alliance had offered $20 million for any information that would lead to his capture.
The Supreme Political Council was formed by the Houthi movement and the General Peoples Congress Party to run state affairs in the absence of an effective government in 2016, a year after the Saudi regime and a coalition of its allies began their US-backed military aggression.
Yemens top governing body has appointed Mehdi Mohammad Hussein al-Mashat as its new head.
Yemens Defense Ministry has vowed a crushing response to the assassination, saying Saudi Arabia and the US will regret their criminal adventurism.
PressTV-Yemen vows to avenge killing of Houthi official
The Defense Ministry says Saudi Arabia and the US will pay for their criminal adventurism after Riyadhs air raid kills a senior Houthi official.
Leader of the Houthi Ansarullah movement Abdul-Malik Badreddin al-Houthi held the US and Saudi Arabia responsible for Samads killing, saying, This crime wont go unanswered.
The Saudi aggression was launched in March 2015 in support of Yemens former Riyadh-friendly government of president Abdrabbuh Mansour Hadi and against the countrys Houthi Ansarullah movement, which has been running state affairs in the absence of an effective administration.
The offensive has, however, achieved neither of its goals despite the spending of billions of petrodollars and the enlisting of Saudi Arabia's regional and Western allies.
The Yemeni Ministry of Human Rights announced in a statement on March 25 that the Saudi-led war had left 600,000 civilians dead and injured since March 2015.
