Dr. Murray's Baby Mama -- Grand Jury Bound

9/22/2009 5:41 PM PDT

Dr. Murray's Baby Mama -- Grand Jury Bound

TMZ has confirmed one of Dr. Conrad Murray's baby mamas will be called to testify before the L.A. County Grand Jury in the Michael Jackson investigation -- because she's not cooperating with the cops.

The L.A. County D.A. has asked the Grand Jury to put Nicole Alvarez under oath and testify about Dr. Murray's comings and goings around the time Jackson died.

Alvarez -- the mother of Dr. Murray's 7th child -- lives in Santa Monica, CA. As we first reported, law enforcement sources told us they believe Dr. Murray was actually living in Santa Monica during the time he was supposedly living at Jackson's house. Although we've heard he may have been living with Alvarez, we have not been able to confirm that.

This development does not mean the Grand Jury will decide whether to charge Dr. Murray with the death of Jackson -- this is merely an investigative tool law enforcement sometimes uses with uncooperative witnesses.