Airport explosion causes delays out of Atlanta airport

Airport explosion: A small explosion at Atlanta's international airport caused brief power outage and delayed about 35 flights, say airport officials.

A small explosion and power outage at a concourse of Atlanta's Hartsfield-Jackson International Airport was likely caused by a malfunctioning power supply unit Tuesday morning, airport officials said.

Passengers were allowed to return to their gates at the airport after an electrical explosion at a maintenance shop knocked out some power to one of the concourses, authorities said. No one was injured.

The explosion happened around 8:40 a.m. at a maintenance shop near Gate D 21, said airport spokesman Reese McCranie.

McCranie said there was no fire, but the explosion caused what he described as some "minor property damage."