The top court on Monday allowed the convicted chairman of food and entertainment conglomerate CJ Group to attend the funeral of his father.

Lee Jay-hyun has been allowed to stay mostly at Seoul National University Hospital for medical treatment since 2013, though he was later sentenced to three years in prison and 25.2 billion won ($21 million) in fines in an appeals court ruling a year later for embezzlement, breach of trust and tax evasion.

The Supreme Court said it accepted Lee's request to add the funeral hall of the same hospital to the list of places he's permitted stay until Thursday in order for him to attend the funeral of his father Lee Maeng-hee.

The 55-year-old business tycoon has had to submit a request to the court as the address of his ward and the funeral hall were different, though they are in the same compound.

Lee Maeng-hee died on Aug. 14, at the age of 84 after a years-long battle with lung cancer at a hospital in Beijing where he was being treated, according to CJ Group.

Lee Maeng-hee is the elder brother of Samsung Electronics Co. chairman Lee Kun-hee, who has been hospitalized since May last year after suffering a heart attack.

Lee Jay-hyun, who received a kidney transplant in 2013, has been hospitalized for multiple illnesses such as Charcot-Marie-Tooth disease, high blood pressure, high cholesterol and kidney disease.

Charcot-Marie-Tooth disease is an inherited neurological disease characterized by progressive degeneration of muscles in the feet, lower legs and hands.

Lee Jay-hyun is currently undergoing an appeal with the Supreme Court. (Yonhap)