A Saudi whistle-blower has said that as tension escalates in the kingdom, a coup to overthrow King Salman and his son is highly likely.

“Moves in the al-Saud family to oust Salman bin Abdulaziz (the Saudi king) have increased by those who support Ahmed bin Abdulaziz (the king's brother) as they are convincing him of taking the leadership in Saudi Arabia,” said Mujtahid, who is believed to be a member of or have a well-connected source in the royal family.

He further said that some princes have joined the move and intend to issue a statement to declare King Salman’s incompetency in order to remove him from his position and nullify his recent order that brought his son to the post of the crown prince.

Last month, the Saudi king replaced Crown Prince Mohammed bin Nayef bin Abdulaziz with his own son, Mohammed bin Salman, the deputy crown prince and defense minister.

According to a royal decree, Mohammed bin Salman will maintain his post as defense minister.

King Salman had earlier stripped Nayef of his powers overseeing criminal investigations and designated a new public prosecution office to function directly under the king’s authority.

Under King Salman, Saudi Arabia has waged a war against neighboring Yemen, killing tens of thousands of civilians and inflicting heavy losses on the poor country.