The Federal Aviation Administration issued a ground stop for Seattle-Tacoma International Airport on Saturday afternoon because of a security threat on a plane bound for Walla Walla.

One suspect has been arrested after allegedly making a threat to a flight attendant while onboard a flight at Seattle-Tacoma International Airport, according to airport officials.

A passenger was taken into custody Saturday afternoon after a reported bomb threat aboard an Alaska Airlines flight at Seattle-Tacoma International Airport, officials said. At around 12:15 p.m., officials with the Port of Seattle said they were first made aware of a direct threat made by a passenger on Alaska flight 2123 heading to Walla Walla.