Jeremy Richman, 49, the father of 6 year-old killed in the Sandy Hook school shooting in 2012, has died of an apparent suicide. CNN reports that Richman’s body was found in his Connecticut office building on Monday morning and police say that, other than to say say it does not appear suspicious, they “will not disclose the method or any other details” of the death.

After the death of daughter Avielle, Richman, who was a neuropharmacologist, and his wife Jennifer Hensel created the Avielle Foundation. The foundation sought to “make the invisible visible by building bridges between the biochemical and behavioral sciences…to prevent violence and build compassion.” It was in the offices of this foundation that Richman was found dead, according to Newstimes.

The foundation released the following statement.

Our hearts are shattered, and our heads are struggling to comprehend. Jeremy was a champion father, husband, neuroscientist and, for the past seven years, a crusader on a mission to help uncover the neurological underpinnings of violence through the Avielle Foundation, which he and his wife, Jennifer Hensel, founded after the death of their daughter, Avielle, at Sandy Hook Elementary School. Jeremy was deeply devoted to supporting research into brain abnormalities that are linked to abnormal behavior and to promoting brain health. Tragically, his death speaks to how insidious and formidable a challenge brain health can be and how critical it is for all of us to seek help for ourselves, our loved ones and anyone who we suspect may be in need.

Jeremy’s mission will be carried on by the many who love him, including many who share the heartache and trauma that he has suffered since December 14, 2012. We are crushed to pieces, but this important work will continue, because, as Jeremy would say, we have to.

As we did six years ago and now must do again today, we ask both the media and the public to give the family the privacy anyone would deserve to begin to process this tragic development.

This is the third suicide in the past week among those left behind after a school shooting. 19 year-old Parkland survivor Sydney Aiello took her own life over the weekend after suffering from survivor’s guilt and PTSD, and a Parkland sophomore took his life the next day.

If you or someone you know needs help, please call the National Suicide Prevention Hotline at 1-800-273-8255.