Michael Jackson's bodyguard testified Thursday that Dr. Conrad Murray asked him to hide drugs in a bag before calling an ambulance for the dying pop star.

In the third day of Murray's manslaughter trial in Los Angeles, Alberto Alvarez took the stand and testified that when he entered the room, Murray was performing chest compressions on Jackson. The doctor asked him to hold vials of propofol and put it in an IV bag, before he called an ambulance.

Alvarez was the first member of the household to arrive in Jackson's bedroom after the doctor shouted for help.

When Murray made a request to bag the vials of propofol, Alvarez thought that he was preparing for the trip to the hospital.

Jackson’s chef, Kai Chase, the second witness, testified that Murray anxiously came down the stairs at Jackson’s Los Angeles mansion between 12:05 p.m. and 12:10 p.m. on June 25, 2009.

His energy was very nervous and frantic and he was shouting, 'Get help, get security, get Prince,' Jackson's then 12-year-old son, Chase testified, Reuters reported.

Alvarez also testified that when he entered the room, Jackson's eyes were open. He was shocked to see the singer was wearing a condom catheter, a medical device that allows men to urinate without having to get up, Herald Sun reported.

Alvarez then said that Murray told him that Jackson had had a bad reaction.

Prosecutors argued that Murray did not inform anyone else in the household that he had been giving Jackson propofol and other drugs to help him sleep.

But Murray defense attorney, Ed Chernoff, in his opening statements, said that Jackson managed to ingest the fatal dose on his own.

The trial will resume Friday at 8:45 a.m. PT.

Murray is charged with involuntary manslaughter for giving a powerful anesthetic, propofol, to the singer.