On 26 December 2012 he was admitted with atrial fibrillation and a traumatised thorax with pulmonary contusion to the Elias Hospital in Bucharest. He complained of pain in the lower abdomen and loss of appetite. After the clinical examination, the doctors concluded that he was suffering from an acute episode of diverticulitis, and he received treatment for this condition. During the treatment, Nicolaescu's condition improved, but the intestinal transit was not functional and the blood work was still unsatisfactory. The doctors opted for an exploratory laparoscopy, which led to the discovery of an acute perforated appendicitis complicated with peritonitis. After undergoing surgery, Nicolaescu developed respiratory complications, leading to acute respiratory failure within 48 hours. He entered into cardiac arrest on 3 January 2013, and could not be resuscitated by the hospital staff. He was pronounced dead at 8:20 AM GMT+2. His body was cremated on 5 January 2013, according to his wishes.