The nation’s consumer protection authority is considering mediating a collective dispute over mattresses made by Daijin Bed Company which were found to contain a radioactive substance.  
 
The Korea Consumer Agency said that as of 11 a.m. Thursday, 990 consumers filed complaints about the mattresses in question and 60 of them expressed willingness to take part in a collective dispute settlement process. 
 
The agency’s Consumer Dispute Settlement Commission launches efforts to mediate a collective dispute if more than 50 consumers have suffered similar damage from a certain product. 
 
Earlier this month, news outlets reported that some of the mattresses produced by Daijin Bed were found to contain the radioactive material radon. 

Following the report, the consumer agency sent the bed maker an official request on May fourth, requesting an explanation and a recall of the products in question. 

The Nuclear Safety and Security Commission also ordered a recall on Tuesday, concluding that seven types of Daijin mattresses contained an above standard level of the radioactive substance. 

Radon is a colorless, odorless gas and is considered a health hazard due to its radioactivity. Exposure to a radioactive gas can cause lung cancer.