Brett Kavanaugh turned away from a father of a high school student murdered in the Parkland, Fla., mass shooting during a break in his Supreme Court confirmation hearing on Tuesday.

During a lunch break in the hearing, Fred Guttenberg, whose daughter Jaime Guttenberg was one of the 17 high school students killed in the Marjorie Stoneman Douglas High School shooting in February, wrote on Twitter he tried to talk to Kavanaugh, who turned away from him.

'Just walked up to Judge Kavanaugh as morning session ended. Put out my hand to introduce myself as Jaime Guttenberg's dad. He pulled his hand back, turned his back to me and walked away. I guess he did not want to deal with the reality of gun violence,' he wrote.

Brett Kavanaugh turns away from Fred Guttenberg, whose daughter was killed in the Parkland shooting

Judge Brett Kavanaugh listens to Fred Guttenberg, a parent of a student who was a victim at the Stoneman Douglas High School shooting in Parkland,Florida

Fred Guttenberg tweeted Kavanaugh turned away from him when he introduced himself

Fred Guttenberg (L), father of Parkland, Florida, shooting victim Jaime Guttenberg, tries to speak with Judge Brett Kavanaugh as he leaves for a break during his confirmation hearing

Fred Guttenberg's 14-year-old daughter Jaime Guttenberg was one of the 17 high school students killed at Marjorie Stoneman Douglas High School

But the White House pushed back, saying security had stopped Guttenberg from speaking to Kavanaugh.

'As Judge Kavanaugh left for his lunch break, an unidentified individual approached him. Before the Judge was able to shake his hand, security had intervened,' White House deputy press secretary Raj Shah, who's handling Kavanaugh's confirmation, tweeted.

Then Guttenberg snapped back at Shah, saying Sen. Diane Feinstein, the ranking Democrat on the Senate Judiciary Committee, introduced him.

'Incorrect. I was here all day and introduced by Senator Feinstein. No security involved. He turned and walked away,' he tweeted in reply.

Guttenberg told The Washington Post he is certain Kavanaugh heard him and disputed that the presence of security had any role in the lack of interaction.

'There was no security intervention,' Guttenberg said. 'When he turned that way and started moving, they started following him. But he had every ability to engage me.'

After the lunch break, Guttenberg was questioned by U.S. Capitol Police for about 15 minutes, he said, before they let him return to the hearing.

Kavanaugh's confirmation hearing on Tuesday was interrupted multiple times by protesters, who were expressing concern about President Donald Trump's nominee's record on abortion rights.

Guttenberg has become a gun control advocate and fierce critic of the National Rifle Association since his 14-year-old daughter was one of the 17 students who on died on Valentine's Day in the mass shooting.

He became a national figure in February when he challenged Florida Sen. Marco Rubio about his gun rights position in a CNN town hall following the shooting.

'Sen. Rubio. My daughter, running down the hallway at Marjory Stoneman Douglas, was shot in the back with an assault weapon - the weapon of choice. OK?' he said.

'It is too easy to get,' Guttenberg added. 'It is a weapon of war. The fact that you can't stand with everybody in this building and say that, I'm sorry.'

Rubio, a Republican, has said he supports a law denying guns to those under the age of 18.

'I believe that someone like this individual and anyone like him shouldn't have any gun,' Rubio said. 'I absolutely believe that in this country if you are 18 years of age, you should not be able to buy a rifle, and I will support a law that takes that right away.'

Kavanaugh's hearing has been interrupted by protesters all day

Fred Guttenberg holds out his hand to Brett Kavanaugh

Fred Guttenberg's daughter was killed in the Parkland shootings

The White House said security kept Kavanaugh from speaking to Fred Guttenberg

Guttenberg snapped back

Guttenberg has become a national voice on gun control

Jamie Guttenberg was killed in the Parkland, Fla., massacre

March for Our Lives, the gun control group that sprang out of the Parkland shooting, has raised alarms about what Kavanaugh's vote could do for gun laws.

Aalayah Eastmond, a survivor of the Parkland shooting will testify against Kavanaugh. She is a representative for the Brady Campaign, an organization that aims to curtail gun violence, and led a march across the Brooklyn Bridge in June to protest gun violence.

Kavanaugh is replacing the retiring Justice Anthony Kennedy, who is often the swing vote on controversial issue before the court. Kavanaugh, a more conservative judge, is expected to move the bench to the right.

The high court has heard surprisingly few cases involving gun rights.

But, in 2008, the court for the first time declared that the right to bear arms was meant to protect an individual's right to own a gun for self-defense in his home.

The vote was 5-4, with Kennedy casting the decisive fifth vote.

On the U.S. Court of Appeals for the District of Columbia, Kavanaugh has shown a position in favor of gun rights.

Kavanaugh has argued that the Second Amendment, like the First Amendment's guarantee of free speech, is a fundamental right that can be limited only in the narrowest of circumstances.