WASHINGTON (AP) — A man whose teenage daughter was killed in the Parkland, Florida, school shooting tried to shake the hand of Supreme Court nominee Brett Kavanaugh during a break in Tuesday’s confirmation hearing.

Fred Guttenberg, whose daughter Jamie died in the February 2018 attack, approached Kavanaugh after he rose from the witness table for a lunch break. He put out his hand to Kavanaugh, who paused for a moment before turning away as a security guard stepped in.

Afterward, Guttenberg tweeted that Kavanaugh “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.”

Guttenberg pushed back on Twitter, saying: “Incorrect. I was here all day and introduced by Senator Feinstein. No security involved. He turned and walked away.”

After the encounter, Capitol Police talked with Guttenberg. He was again sitting in the hearing room for the afternoon session.

The Feb. 14 massacre at Marjory Stoneman Douglas High School left 17 people dead.

Guttenberg said he was attending the hearing at the invitation of U.S. Sen. Dianne Feinstein, D-Calif. Guttenberg has voiced concerns about Kavanaugh’s record on gun control, writing on Twitter that he hopes to “play a role in ensuring that this man does not become the next Supreme Court Justice.”

Protesters sought to disrupt the first day of Kavanaugh’s confirmation hearings. U.S. Capitol Police reported 70 people were arrested and charged with disorderly conduct or unlawful demonstrating.

Ashley Schapitl, a Feinstein spokeswoman, said the California senator invited Guttenberg to attend the hearing because he had a “personal stake in Brett Kavanaugh’s views on the law.”

The handshake moment quickly went viral on social media.