NEW : Dr. Klein injected 6,500 milligrams of Demerol into Jackson , the defense says . The prosecution counters that it was a lethal dose and that there is no evidence to support this claim. Jackson 's insomnia could have been caused by Demerol , a sleep expert says . Murray claimed the day Jackson died he was trying to wean Jackson from using the surgical anesthetic propofol to induce sleep , a treatment he gave him almost every night the previous two months . NEW : Trial could end early , judge says . Anesthesiologist Dr. Steven Shafer may be the prosecution 's last witness .
NEW : Dr. Klein injected 6,500 milligrams of Demerol into Jackson , the defense says . The prosecution counters that it was a lethal dose and that there is no evidence to support this claim. Jackson 's insomnia could have been caused by Demerol , a sleep expert says . NEW : Trial could end early , judge says . Anesthesiologist Dr. Steven Shafer may be the prosecution 's last witness .