North Korean leader Kim Jong-un has made his first public appearance since 3 September, BBC reported according to the country's official news agency.
The KCNA agency said on Tuesday that Mr Kim "gave field guidance" at a newly-built scientists' residential district.
Rodong Sinmun daily newspaper carried several photographs of Mr Kim using a walking stick as he inspected the site.
The absence of the 32-year-old leader had prompted a flurry of speculation about his health.
Some observers said Mr Kim could be suffering from gout or problems in his hip joint. Others even questioned if he remained in control of the state. During his absence, Mr Kim missed two high-profile public events - the 10 October anniversary of the establishment of the Korean Worker's Party and the 9 September Foundation Day of the North Korean State.
Analysts said they were two days in the political calendar when the leader would be expected to make an appearance.
Kim Jong-un took office on the death of his father, Kim Jong-il, in December 2011 and was quickly named head of the party, state and army.
In 2012 he was appointed marshal - the highest military rank - following a high-level military reshuffle.
Then, in December 2013, Mr Kim purged and executed his uncle, Chang Song-thaek, who state media said had been plotting a coup.