Crime is growing in the notoriously overcrowded Moria refugee and migrant detention camp on the island of Lesbos, a facility the BBC had called “the worst in the world” and which human rights groups said isn't fit for people to live in.

Five people have died in more than 15 knifings since January, with those involved in the brawls often from different ethnic groups battling each other in close proximity, reported Kathimerini of the troubles.

The latest was on July 5 during a fight between African and Afghan asylum-seekers over a cellphone and resulted in the death of a 19-year-old man from the Ivory Coast. 

A police officer serving there told the paper it's difficult to find perpetrators because of the chaos inside the facility holding 18,000 people in an area designed for 3,000.

Lesbos is holding the most refugees and migrants, with four other islands holding more who were sent there by human traffickers that Turkey lets operate during a essentially-suspended 2016 swap deal with the European Union.

The Moria camp has been the most violent and troublesome with constant frustration over long-delayed processing of asylum applications on hold as long as two years with the refugees and migrants locked out of other EU countries which closed borders.