MINNEAPOLIS (AP) - In February 2015, a man jumped a security fence protecting Minneapolis-St. Paul International Airport and was arrested near a terminal gate after crossing the airfield. Authorities found a knife on him.

An Associated Press investigation uncovered the perimeter security breach. Airport officials did not reveal the breach when AP first asked. Last year, airport officials acknowledged 10 intrusions since 2004.

Federal records showed the eleventh breach - the man told authorities he went for a walk from a nearby hotel to avoid a fight with his girlfriend. An apologetic airport spokesman said a records search missed the incident.

Airports say their perimeters are strong and note no breach involved a known terrorist plot.

Nationally, breaches happen about every 10 days at one of the 31 major airports AP studied.