John Lennon’s killer is up for parole for the sixth time just months before the 30th anniversary of Lennon’s death. Mark David Chapman is scheduled to be interviewed by two members of the parole board as early as Tuesday. Chapman’s last bid for parole in 2008 was denied “due to concern for the public safety and welfare.” Chapman is serving a sentence of 20 years to life in prison for the shooting death of Lennon outside Lennon’s New York City apartment on December 8, 1980. He has served 29 years of his sentence at the maximum-security Attica Correctional Facility, where he has not had an infraction since 1994. In previous years, Lennon’s widow Yoko Ono has submitted a letter requesting that parole be denied. Lennon would have turned 70 this October.