Washington (CNN) Fred Guttenberg -- the father of a slain Parkland student who was rebuffed by Supreme Court nominee Brett Kavanaugh when he tried to shake the judge's hand the first day of his confirmation hearings -- said Thursday that Kavanaugh's life is "not ruined."

"Justice Kavanaugh your life and family are not ruined. Try having a child murdered by a weapon that you refer to as 'common use.'" Guttenberg tweeted. "You will get through this and hug both of your children tonight."

Justice Kavanaugh your life and family are not ruined. Try having a child murdered by a weapon that you refer to as "common use." You will get through this and hug both of your children tonight. — Fred Guttenberg (@fred_guttenberg) September 27, 2018

Guttenberg's daughter, Jaime, was killed, along with 16 other students and staff members, when a gunman opened fire at Marjory Stoneman Douglas High School in Parkland, Florida, in February.

Christine Blasey Ford and Kavanaugh both testified before the Senate Judiciary Committee Thursday in regard to Ford's allegation that he sexually assaulted her when they were both in high school. She said Thursday she is "100%" sure it was Kavanaugh who assaulted her.

The Supreme Court nominee denies the allegation, and said Thursday in his opening statement before the committee that "my family and my name have been totally and permanently destroyed by vicious and false additional accusations." He also said her claim is part of a "calculated and orchestrated political hit" designed to keep him off the Supreme Court.

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