San Francisco police are set to give a news conference on the violent assault early Friday on the husband of House Speaker Nancy Pelosi at the couple's home.
A man is in custody for the attack, which left 82-year-old Paul Pelosi hospitalized.
The man was searching for the House speaker, shouting, "Where is Nancy, where is Nancy?"
before attacking Paul Pelosi, a source told NBC.
Nancy Pelosi, a California Democrat, was in Washington, D.C., at the time of the incident, authorities said.