Los Angeles, California (CNN) -- The pretrial hearing for Dr. Conrad Murray continues Wednesday as a Los Angeles County Superior Court judge decides whether there is "probable cause" to try him on an involuntary manslaughter charge in the death of pop star Michael Jackson.
The hearing, which began Tuesday, is expected to last two or three weeks, with 20 to 30 witnesses testifying.
On Tuesday, Jackson's former security chief testified that Murray seemed not to know how to administer cardiopulmonary resuscitation as he waited for paramedics to arrive at the singer's house.
Faheem Muhammed said he and and guard Alberto Alvarez saw Murray crouched next to Jackson's bed "in a panicked state asking, 'Does anyone know CPR?'".
"I looked at Alberto because we knew Dr. Murray was a heart surgeon, so we were shocked," Muhammed said. CNN
