Has this story been corroborated, and do we know how many people have been interned?
The defining feature of concentration camps has been planned extermination of inmates via malnutrition, overworking and bad conditions. Size is less important.
WP discusses the deadliness, or relative lack thereof, of Japanese concentration camps: "Despite a shortage of healthcare workers, limited access to equipment, and tension between white administrators and Japanese American staff, these hospitals provided much needed medical care in camp. The extreme climates of the remote incarceration sites were hard on infants and elderly inmates. The frequent dust storms of the high desert locations led to increased cases of asthma and coccidioidomycosis, while the swampy, mosquito-infested Arkansas camps exposed residents to malaria, all of which were treated in camp. Almost 6,000 live deliveries were performed in these hospitals, and all mothers received pre- and postnatal care. The WRA recorded 1,862 deaths across the ten camps, with cancer, heart disease, tuberculosis, and vascular disease accounting for the majority."
In Chechnya, Kadirov's word is the law but federal courts are not. Makes one wonder who really won the last war.