Police in Finland have launched investigations into the cause of the deaths of a Kenyan woman and her daughter.

Catherine Beatrice Heiskanen and her adult child, Patience Coppins, had been reported missing on February 8, only to be found dead in their mobile food kiosk at Tahko, in Kuopio.

Police say preliminary investigations suggest that the mother and daughter may have died of carbon monoxide poisoning. A charcoal burner was found in the mobile food kiosk in which the two bodies were found. The kiosk had been locked from the inside.

Catherine and her daughter Patience were last seen at Lisalmi area in the north of Finland’s capital city, Helsinki.

“One of the women was in her forties and the other twenty years younger. The younger of the women is an entrepreneur, who owned a food cart company. The matter is being investigated as a cause of death investigation, meaning that no crime is suspected,” the Finland Police Department said in a statement.