Hyderabad: Dr Guru N Reddy, the Chairman and Managing Director of Continental Hospitals said that Tollywood actor Superstar Krishna suffered cardiac arrest and is on ventilator support. Speaking to the media, Dr Guru N Reddy said that Namratha brought actor Krishna to the hospital at midnight and added that he was is unconscious at that time. He added that they will provide treatment to the actor and will release the health bulletin after 24 hours. He said that every hour is crucial now and added that the treatment will be provided after how the actor's body reacts to the medicine.