Vice President Joe Biden said in an open letter to the Stanford University campus rape victim that her account of the assault is “forever seared on my soul.”

The letter was first obtained by BuzzFeed News Thursday, following a national uproar over the sentencing of Brock Turner, 20, who was convicted of the sexual assault. Turner, 20, was found guilty by a California jury of three counts of sexual assault, but was sentenced to just six months in county jail after prosecutors pushed for six years.