Frankfurt Airport has been evacuated after a passenger escaped a security check and fled the terminal, according to the mirror.co.uk, the online edition of The Daily Mirror newspaper.
Police have cleared Terminal 1 and 2 after the person dived into the crowd and disappeared.
The airport's operator Fraport said on Aug. 31 that a security alert was sparked after the passenger ran to the other side of the security gates without fully completing the security check.
"Today at Frankfurt Airport a passenger entered the security area before the security check had been completed,” the spokeswoman added. "Therefore the German federal police cleared departure hall A as a preventative measure. Passengers will be rechecked prior to departure."
She added that the security alert will cause delays at the transport hub.
Frankfurt Airport, the fourth-busiest in Europe, is operated by Fraport and serves as the main hub for Lufthansa. It covers an area of 2,000 hectares and has a capacity of some 65 million passengers per year.