Police responded to a food court in Terminal 2 of San Francisco International Airport, and the area was cleared after an "unattended item" was found.
The airport wrote in a tweet at 12:53 p.m. Sunday that the Terminal 2 food court and "D gate" areas were cleared "out of abundance of caution" but didn't give further information on the incident.
A Twitter user named Leo Rezaei wrote that he was set to fly to Los Angeles but told that all flights had been grounded.
A spokesperson for the San Francisco Police Department said that officers responded to Terminal 2 at approximately 11:30 a.m. regarding a suspicious package, subsequently investigating the incident and evacuating the area.
The spokesperson followed up at approximately 2:30 p.m. and said the area was deemed safe and being reopened. The airport posted an update on Twitter indicating that the issue had been resolved.
San Francisco airport officials did not respond to requests for additional comment by publication time.