In a continuing procession of loyalty pledges, more North Korean officials and ordinary people have sworn loyalty to their leader Kim Jong-un, Pyongyang's state-run radio reported Friday, in what could be the North's latest attempt to drum up support for the young leader following the bloody purge of his uncle.

The North Koreans said they will faithfully "follow the ideology and leadership of the Marshall of Paektu bloodline" in a series of allegiance letters addressed to the leader, according to the radio broadcast monitored in Seoul.

Kim was named Marshal of North Korea last year as he has been consolidating his grip on power that he assumed in 2011 when his father, long-time leader Kim Jong-il, died suddenly of a heart attack.

North Korea has mobilized its propaganda media to rally support for Kim, noting he carried the country's royal bloodline, called the Mount Paektu bloodline.

The North claims the mountain, the highest peak on the Korean Peninsula and located on the Sino-North Korean border, is the sacred birthplace of Kim Jong-il, though historians and foreign officials have said he was born in Russia.

On Monday, tens of thousands of North Korean troops also pledged the military's loyalty to Kim.

The North's recent moves are seen as being aimed at strengthening Kim's monolithic leadership following the execution of Kim's once-powerful uncle Jang Song-thaek accused of treason. (Yonhap News)