Commissioner Robert Barton reportedly told the youngest Menendez brother, 54, that the 1989 killing of their parents Jose and Kitty Menendez was “devoid of human compassion,” noting the particular brutality of the shotgun murders for which he was convicted alongside brother Lyle Menendez, now 57, according to local KTLA .

Erik Menendez was denied parole during his first-ever parole hearing on Thursday, 36 years and one day after he and his brother killed their parents.

Lyle has a hearing of his own on Friday. Here is some of what we learned about the killings and Erik's time in prison, based on Thursday's hearing, which he attended virtually. The parole commissioner, Robert Barton, said the main reason for his denial was not the killings themselves, but Menendez's behaviour in prison.