North Korean leader Kim Jong Un has selected his daughter as his heir, South Korea's spy agency told lawmakers on Thursday, BBC reported. 

Little is known about Kim Ju Ae, who in recent months has been pictured beside her father in high-profile events like a visit to Beijing in September- her first known trip abroad. 

The National Intelligence Service (NIS) said it took a "range of circumstances" into account including her increasingly prominent public presence at official events" in making this assessment, according to BBC.