A tragic mix-up between the parents of five-year-old Robin Van Caliskan, who drowned last year, may have led to him being unattended in the adult pool, an inquest heard.

Tasmin Paterson and her nine year old son Hudson sadly lost their lives with police treating the deaths as unexplained

Robin Caliskan was found at the bottom of the indoor pool at the Atlantic Reach Holiday Park, near Newquay, Cornwall, by members of the public, after going for a swim with his family

The father has opened up on his 'soul destroying' grief after Tasmin Paterson, 31, and her son Hudson Paterson were found dead at home in what police described as an 'unexplained' incident

Maureen O’Connor lived “off grid” in a wooden building in Skehill in Glengarriff

"It's soul destroying and the grief is unimaginable."

The bodies of Hudson Paterson, nine, and Tasmin Paterson, 31, were discovered by emergency services at the house in Fletchersbridge, Cornwall, on September 7 following concerns for their welfare.

Chiara Petrolini, 22, was arrested by murder cops after DNA tests allegedly confirmed she was the mother of one of the infants, a boy, found in her garden. She is currently being held on suspicion of infanticide.