In this video frame grab, inmates gather in a prison in Bunia, in Ituri Province, Democratic Republic of Congo on September 4, 2020. Hundreds of detainees die each year in severely overcrowded and unsanitary prisons in the Democratic Republic of Congo, which prison officials and NGOs say is largely due to a lack of food and medicine. (JORKIM JOTHAM PITUWA / AFP)

BUNIA, Democratic Republic of Congo - Friends of 18-year-old Muno Lembissa said he died in prison from sorrow. The jail’s director said malnutrition contributed to his demise, because he did not have visitors to bring in meals to feed him.

The teenager is one of dozens of inmates to die this year in the main prison in Bunia, in northeastern Democratic Republic of Congo, where, like the rest of the country, conditions are overcrowded and there is not enough food to go around.

More than 50 prisoners have died of malnutrition at Bunia Central Prison since the start of 2020, according to the United Nations

Lembissa had been convicted of rape and sentenced to a year in jail.

“The sentence really upset him and as a consequence he started to lose weight,” said David Ilopa, Lembissa’s friend and fellow inmate.

“The worry and the hunger were hurting him,” said another inmate, Detsuvi Elie.

Authorities monitored the Reuters interviews with both men, and it was not clear whether they felt able to speak freely about conditions in the jail.

ALSO READ: WHO 'outraged' by sex abuse reports in Congo Ebola operation

But Camille Nzonzi Mokonyo, director of Bunia Central Prison, conceded that the lack of food was a factor.

“It wasn’t only the punishment that tormented him, but also the malnutrition which led to his death,” he told Reuters. “People who don’t have visitors only eat what is available at the prison.”

Built to house around 250 inmates, the grey concrete walls of the jail hold more than five times that number.

Meals are budgeted according to a prison’s capacity rather than its population, so detainees like Lembissa, who have no family nearby to bring them food, rarely get more than one meal a day and have to rely on outside help.

“It is an undeniable fact that there is a need to put better effort in the management of prisons in our country,” said Congo’s human rights minister Andre Lite.

READ MORE: UN says life of Congo's Nobel Laureate doctor in danger

More than 50 prisoners have died of malnutrition at Bunia Central Prison since the start of 2020, according to the United Nations.

“Malnutrition is rife in prisons across Congo,” said Thomas Fessy from Human Rights Watch. “If it wasn’t for aid coming from local aid groups and charities and churches, most detainees wouldn’t be fed at present.”