Alert cleared after another Nigerian passenger reported disruptive on Delta/Northwest Flight 253

Security officials at the Detroit Metro Airport "responded to a report from an incoming flight from Amsterdam where a passenger spent a lengthy time in the restroom. This raised concerns so an alert was raised," said the Federal Bureau of Investigation (FBI) in a statement.
The FBI said that the incident was a "non-serious incident," and cleared the alert it triggered.
The Delta Air, who owns the Northwest Airlines, confirmed that a Nigerian man had locked himself in the airplane's lavatory for one hour and became verbally disruptive.
In response to the incident, crew members had to requested emergency assistance upon arrival, asking for security personnel to remove the man from the airplane after it landed, said a spokeswoman from the airlines.
All other 255 passengers got off safely, she added, Kazinform refers to Xinhua.
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