Testimony resumes in Murray trial

Testimony has resumed in the involuntary manslaughter case against the doctor charged over Michael Jackson’s death.

Prosecutors called an executive from a company that manufactures a $275 device which measures pulse and oxygen levels in the blood. Authorities recovered the device after Jackson’s death.

Nonin Medical executive Bob Johnson told jurors today that the model had no audible alarm and is not intended to be used for continuous monitoring of patients.

Prosecutors have said Dr Conrad Murray lacked the proper monitoring and life-saving equipment when he was giving Jackson doses of the surgical anaesthetic propofol.

Murray has pleaded not guilty.

Jurors are expected to hear later from paramedics who were called to the singer’s rented mansion and tried to revive him.