The doctor convicted of involuntary manslaughter in Michael Jackson's death says he is willing to answer any questions the U.S. pop icon's mother might have. Cardiologist Conrad Murray was convicted of involuntary manslaughter in the singer's 2009 death and sentenced to four years in prison in 2011. Jackson was 50 when he died after Murray administered a lethal amount of anesthesia and sedatives to him in an effort to help him sleep. The Los Angeles Times said Murray has invited Jackson's mother, Katherine, to visit him behind bars so they can talk about the recording artist's last days. His lawyers said in a statement to CNN Murray is willing to "answer any questions she might have." "I've been told that she has a desire to speak with me before she departs this life," Murray said of Katherine, 82. "Seeing that she is up in age and in questionable health, and the fact that she is the mother of a very dear departed friend, it would give me great pleasure to sit with her one-on-one and answer any questions she might have. ... It would put her at peace. ... I would do that truly out of concern for her and altruistic love and concern for others. I want to see her. I do not want Mrs. Jackson to suffer. She remains as dear to me as my own mother, unbeknownst to her." Katherine Jackson's representative told the Times he would pass Murray's offer along but didn't think she would agree to a sit-down. Katherine has been in the news lately because she temporarily lost guardianship of Michael's children -- Blanket, 10, Paris, 14, and Prince, 15 -- after she went to an Arizona resort with other family members and was out of touch with her grandchildren for more than a week. She has since returned home and vowed to regain guardianship of her grandchildren. Reports have been circulating recently that her absence was linked to an attempt by some of her children to get her to fire the executors of Michael's estate.