SEOUL, South Korea — The aunt of North Korea’s leader, Kim Jong-un, has re-emerged in Pyongyang, the capital, the country’s media said on Sunday, dispelling rumors that she was purged after her powerful husband was executed on charges of plotting a coup to topple Mr. Kim in 2013.

North Korea’s state-run media said Kim Kyong-hui, the only sister of Mr. Kim’s father, Kim Jong-il, accompanied Kim Jong-un to an orchestra performance on Saturday for Lunar New Year’s Day. Photos released in state media showed Ms. Kim dressed in black and sitting with Mr. Kim, his wife, his sister and other top leaders in the front row at a theater in Pyongyang.

The fate of Kim Kyong-hui has been a subject of intense speculation since her husband, Jang Song-thaek, once considered the second most powerful man in Pyongyang, was executed in 2013. North Korean media last mentioned her name a few days after her husband’s execution when she was appointed to a committee for the state funeral of another top party official.

She then disappeared from public view completely, setting off rumors that she may have been executed, too. South Korean intelligence officials have dismissed such rumors, saying that she had been hospitalized for poor health but not purged.