(FILES) --- A still image from a video released by Al-Qaeda’s media arm as-Sahab and obtained on October 26, 2012 courtesy of the Site Intelligence Group shows Al-Qaeda leader Ayman al-Zawahiri speaking from an undisclosed location. Zawahiri pledged the group's allegiance to new Taliban leader Mullah Akhtar Mansour in an audio recording released on August 13, 2015 on jihadist websites. AFP PHOTO / HO / SITE INTELLIGENCE GROUP

Al-Qaeda chief Ayman al-Zawahiri has called for revenge attacks in Saudi Arabia and on the West after the kingdom’s execution of some 40 jihadists, according to a message posted online.

In the message, Zawahiri called on supporters to attack “the Crusader-Zionist coalition whenever possible” and urged Saudis to overthrow the kingdom’s ruling family.

Saudi Arabia on January 2 executed 47 people, mostly jihadists convicted of involvement in Al-Qaeda attacks that killed Saudis and foreigners in the kingdom in 2003 and 2004.

A prominent Shiite cleric, Nimr al-Nimr, was also executed, sparking protests from Shiite-dominated Iran and a diplomatic crisis that saw Riyadh cut ties with Tehran.

Zawahiri said Nimr’s killing was “one of the manifestations of the Saudi-Iranian competition for power in the region, but under the umbrella of protecting and complying with the interests of America.”