STOCKHOLM – A healthy 30-year-old man in Sweden died during penis enlargement surgery, in the first ever case reported in the European country.

The man, unnamed yet, had wanted to increase both the girth and length of his genitals using a process in which fat is transferred from his stomach.

Plastic surgeons first carried out the elongation, which involves making an incision to loosen a ligament at the base of the penis.

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They then began the enlargement and had planned to inject two fluid ounces of fat cells. Yet, before they finished the injection, his heart began racing, his oxygen levels fell, and his blood pressure dropped, and he then suffered a heart attack, reports the Journal of Forensic Sciences.

Doctors performed CPR and sent the man to an emergency room, but he died less than two hours later.

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The patient, who had mild asthma, but otherwise no past medical history, died from a fat embolism, the report’s authors state.

While this is the first reported death from this kind of surgery, experts say it often leads to other serious problems.