CHICAGO (AP) – A United Airlines flight from San Francisco to Frankfurt, Germany, has been diverted to Chicago after a threat was found in a bathroom.

United spokesman Charles Hobart says in an email that Flight 926 landed at O’Hare International Airport about 1 a.m. Sunday. The flight was searched, cleared and allowed to continue on to Germany.

Hobart says a crew member found a sticker with a threatening message in a bathroom and the plane was diverted “in an abundance of caution.”

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