The recording of the emergency call was released on June 26, one day after Jackson's death, and it described Murray administering CPR on a bed, not on a hard surface such as a floor which would be standard practice.[16][17] Murray said that he placed one hand underneath Jackson and used the other for chest compression, whereas standard practice is to use both hands for compression.[18][19] Murray controversially did not call 911, claiming that he was hindered because there was no landline telephone in the house and because he did not know the house's exact address.[20][21] It was later discovered that Murray had made several private calls on his cell phone in the hour after discovering Jackson's state which he did not inform law enforcement about.[13] A security guard eventually called 911 at 12:21 pm, nearly an hour and a half after Jackson was first discovered not breathing.