Hidden video cameras caught 18-year-old Shantaniqua Scott place a blanket over her four-month-old son's mouth.
Moments later she clamps her hand over his face and mouth as the newborn baby kicks and struggles for life as his air supply is cut off.
By the time the teenage single mother removes her hand her son Raymond's body appears limp.
Seconds later, with alarms going off indicating the baby had stopped breathing, doctors and nurses rush in to resuscitate him.
The shocking footage was played to a shocked courtroom in Texas where Scott is on trial for attempting to kill her newborn son.
Jurors sat in rapt silence as the video tape recorded at the Cook Children's Medical Centre in July 2010 was played in a Fort Worth courtroom.
They had heard how Scott's son had been taken into hospital after he was reported to have suddenly stopped breathing.
Doctors who examined him at first thought he suffered from severe acid reflux.
He underwent surgery to correct the condition - when acid from the stomach backs up into the oesophagus - and was released from hospital.
But two days later he was back in the emergency unit after he mysteriously stopped breathing.
Staff suspected he was the victim of abuse and set up a hidden camera on the ward where the baby was recovering. Read More