Somalia's Islamic extremist rebels, al-Shabab, quickly claimed responsibility for the bombing. The group, which is allied to al-Qaida, said they carried out the bombing in an announcement on their radio broadcast.
Nur, a prominent local politician in his 70s was appointed government in the middle of last year. He is the second governor killed in recent months in Puntland, a semi-autonomous state in northeastern Somalia.
A suicide bomber killed the governor of Puntland's Nugal region in March. Puntland’s president Said Abdullahi Deni condemned the latest attack as “heinous.”