No massive celebrations were held in North Korea to mark the birthday of its leader Kim Jong-un, contrary to previous state-run media reports.

North Korean leader is believed to turn 33 or 34 on Sunday, as his age is concealed.

According to the NHK World news outlet, Kim's birthday was not proclaimed as a national holiday and no special events were organized, despite the October reports on large-scale celebrations. Some experts believe North Korean leadership was seeking to portray Kim as a "humble leader." In 2014, Kim's birthday celebrations were marked by former basketball player Dennis Rodman's singing "Happy Birthday" to him in Pyongyang. Kim Jong-un became North Korean leader in 2011 after the death of his father Kim Jong II.