MTV Philippines President Francis Lumen stated: "He had a slight attack because of stress due to the recent passing of his mother (Lisette Buendia), and their sound check which lasted till 3 a.m. today (Saturday)." Buendia's mother died of cardiac arrest on August 28 after recovering from surgery to treat her intestinal cancer. Buendia was transferred to Philippine Heart Center 10:00 p.m. of August 31 after being treated at the critical care area of the Makati Medical Center emergency room. Sony BMG reported Buendia was "stable" after suffering hypokalemia a medical condition in which the concentration of potassium in the blood is low. Buendia had been administered with a potassium intravenous fluid.