Qari Yousef Ahmadi, who claims to speak for the Taliban, told The Associated Press that Omar and other top Taliban leaders offered condolences to Mullah Dadullah's family over the killing by the U.S.-led coalition — the first Taliban confirmation of Dadullah's killing.
Ahmadi read a statement attributed to Omar insisting that Dadullah's death "won't create problems for the Taliban's jihad" and that militants will continue attacks against "occupying countries."
Dadullah, a one-legged militant who orchestrated Taliban suicide attacks and beheadings, died of gunshot wounds after a U.S.-led operation over the weekend in the southern province of Helmand. Analysts called the killing the most significant Taliban loss since the 2001 U.S.-led invasion.
Ahmadi said Omar and his council of top Taliban leaders decided against naming an immediate replacement for Dadullah.
"Mullah Dadullah was the commander of all the fighting groups. Now all of the mujahedeen will carry on his same type of jihad. They will carry out attacks just as Mullah Dadullah did in his life," Ahmadi quoted Omar as saying.
Ahmadi spoke by telephone from an undisclosed location.
Dadullah was the second top-tier Taliban field commander to die in six months, after a U.S. airstrike killed Mullah Akhtar Mohammad Osmani in southern Afghanistan in December.