SEOUL, South Korea (AP) -- Before they were detained in Laos and sent home, a group of young North Korean defectors smiled and teased each other as they told an activist how some of them were beaten with sticks for trying to steal noodles in their homeland.
They talked about a South Korean movie they saw, and wondered if prison cells there were really as clean as the film depicted.
The South Korean activist said the encounter provided a glimpse into the lives of North Korea's "ggotjebi," an underclass of vagrants who stay alive by begging, scavenging and stealing. It's not clear how many exist, or what will become of the nine defectors repatriated last week.
The defectors, seven male and two female, were flown home from China. They had been detained in Laos some 17 days earlier, along with a South Korean missionary who tried to help them get to a foreign embassy in the Southeast Asian country, according to South Korean officials and activists in Seoul.
China, North Korea's neighbor and ally, frequently returns North Korean defectors hiding in its territory to their homeland under a bilateral treaty, but analysts said it was unusual for the news of the return of teen ggotjebi to become so public.
The term ggotjebi is believed to originate from a Russian word meaning nomad. It refers to those who manage to stay alive by begging on the streets, stealing food and goods at markets, rummaging through trash heaps, pickpocketing and burglary. North Korean defectors say the government considers ggotjebi a headache because they don't abide by regulations and undermine the country's image.
Though it is unclear how many ggotjebi are in North Korea, the number was believed to have sharply surged in the 1990s, when the country was devastated by a famine that foreign economists estimate killed hundreds of thousands of people. Many people sneaked across the border to China in search of food.
In recent years, as more North Koreans have left their homeland -- sometimes without telling immediate family members -- the number of children abandoned by their parents has risen as well, defectors say.
"We left our children with a promise that they will only have to wait for just three days (until we can stay together again), but now we cannot even count how old they have become," defector Kim Tai-hee said at a rally in Seoul on Wednesday. "We don't know the whereabouts of the children in North Korea."
The nine repatriated defectors ranged in age from 14 to 22, according to two South Korean activists who said they were familiar with them. Most are believed to be orphans found roaming around a Chinese border town by a South Korean missionary who took them in.
Eight of the nine had been ggotjebi at markets in the city of Hyesan in North Korea's northern Ryanggang province, and in the Chinese border town of Changbai, according to South Korean human rights activist Ahn Kyung-su. He said he met the defectors in China in mid-April, for one day.
Ahn said he was told that a South Korean missionary had looked after them for months at a shelter in the Chinese border town of Dandong after bringing them from Changbai. Ahn traveled to Dandong to see if any of the defectors wanted to come to his organization in Seoul.
Ahn said most of the defectors were "very active and playful" and knew one another well.
"They just playfully told me about what one another did as ggotjebi," he said. "They talked about being beaten with sticks by restaurant owners after being caught for trying to steal noodles. They were smiling as they told these stories but actually, they're miserable stories."
He said the defectors were interested in South Korea's pop culture and asked him about a recent hit movie in which inmates help one of their own reunite with his daughter in prison. "One of the questions was whether prison cells in South Korea are really as clean as shown on the movie," he said.
North Korea alleged Wednesday that the youths were not defectors but had been kidnapped by South Koreans.
A spokesman for the Central Committee of North Korea's Red Cross Society accused South Korean traffickers of attempting to abduct the teens, and subjecting them to brainwashing and beatings. The teens also were forced to convert to Christianity, according to a statement carried Wednesday by North Korean state media.
Under North Korea's penal code, repatriated defectors face a minimum of five years of hard labor, and up to life in prison or death for cases deemed serious.