An unknown caller falsely reported on Tuesday that there was someone with a weapon inside the home of David Hogg, a survivor of the February shooting at Marjory Stoneman Douglas High School in Parkland, Fla., who has become a prominent gun-control advocate.

The 911 call, which came in at 8:29 a.m., caused SWAT teams and officers in tactical gear to respond to the recent graduate’s home, according to the Broward County Sheriff’s Office.

A potentially dangerous situation was averted when officers determined no one was home; Mr. Hogg, 18, and his mother were in Washington to accept a human rights award.

“I think it’s really a distraction from what we’re trying to fix here, which is the massive gun violence epidemic in this country,” Mr. Hogg told Local 10 News in Miami.