Alan Jackson has taken on 32-year-old Nick Reiner and said it is unclear when Reiner will be arraigned because he has not been medically cleared for transport, following charges that Reiner stabbed his parents to death in their Brentwood home.Los Angeles prosecutors filed two counts of first-degree murder in LA Superior Court, alleging multiple killings and a sentencing enhancement that Reiner personally used a knife, and authorities say forensic testing, witness interviews and evidence gathered by the LAPD Robbery-Homicide Division and LAFD led to the charges.Jackson, a high-profile Los Angeles defense lawyer who recently won an acquittal in Massachusetts, declined to say how he became involved or who will pay his fees, telling reporters "I can't comment," while investigators continue to gather evidence and the suspect remains held without bail.