03/20/2014 01:47 EDT | Updated 05/20/2014 05:59 EDT

Giant Mine bomber Roger Warren seeks day parole

Roger Warren, who was convicted of nine counts of second-degree murder in connection to the 1992 bombing at Yellowknife's Giant Mine, has applied for day parole.

Nine miners were killed when a bomb exploded underground during a labour dispute at the gold mine.

Warren was convicted in 1995 and is serving a life sentence for the murders. This is the first time he has applied for day parole despite being eligible since 2010.

The Parole Board of Canada said it expects a hearing will be held in June.

Warren is serving time at a federal prison in B.C.'s Fraser Valley.