THE baby boy named by his mother as Van Morrison's love child died after slipping into a diabetic coma, a post-mortem report has revealed.
The tot -- who was nicknamed 'Mini-Van' by the Belfast music legend's former tour manager -- is understood to have weighed almost two-and-a-half-stone (33lbs) when he passed away just nine months before Ms Lee died in an east Belfast hospice.
The post-mortem report carried out by deputy medical examiner Dr Shiping Bao at Tarrant County, Texas, said the child had been found unresponsive at his home.
He was formally pronounced dead at 2.32am at North Hills Hospital on January 25.
He added there were no injuries or fractures and said there was no sign of trauma or foul play.
Blood tests showed a glucose reading of 426mg -- which would indicate extreme hyperglycemia -- extremely high blood sugar.
The report also revealed the child had suffered from a lower respiratory tract infection when aged just seven months -- around the time he was said to have been living in Northern Ireland.
The tragic baby was at the centre of a media storm when Gigi Lee announced his birth on Van Morrison's official website two years ago.
However, Mr Morrison, who is married to former Miss Ireland Michelle Rocca, has continued to deny paternity.
Rumours of the child's death first emerged when news that 44-year-old Gigi Lee had passed away in October. The 44-year-old Texan had been diagnosed with inoperable throat cancer before she was pregnant.
She had refused radiation therapy for her illness fearing the treatment would harm her baby and died in the Marie Curie Hospice in Kensington Road.
Both Gigi Lee and Mr Morrison had gone to the High Court in Belfast previously to prevent publishing various details about where she lived with her son and details about his physical appearance.
A temporary injunction banned publication of the information; however, it was lifted in April last year when Mr Morrison backed down in his attempt to secure a full injunction against the media.