Charles Manson follower Patricia Krenwinkel denied parole
Convicted killer Patricia Krenwinkel, a follower of cult leader Charles Manson, has been denied parole after officials investigated whether battered women's syndrome affected her state of mind at the time of the murders.
Parole commissioners had postponed the proceeding in December while officials investigated the issue.
The parole board did not immediately release the reason for its recommendation at the California Institution for Women east of Los Angeles.
Krenwinkel, 69, was previously denied parole 13 times for the 1969 killings of pregnant actress Sharon Tate and four other people.
The next night she helped kill grocer Leno LaBianca and his wife Rosemary in what prosecutors say was an attempt by Manson to ignite a race war.
The law requires commissioners to give "great weight" to whether physical, emotional or mental abuse affected offenders to the point that it appears the criminal behaviour was a result of that victimisation.
Krenwinkel is the state's longest-serving female inmate.