A civilian lorry carrying missile parts has been caught up in a fire inside a South Korean tunnel.
The lorry was in a four-vehicle convoy travelling through the road tunnel between the southern cities of Taegu and Masan, an Air Force spokesman said.
Reports say a tyre on one of the lorries caught fire after it braked.
Scores of cars were trapped in the tunnel by the fire, but witnesses said they thought everyone had escaped.
"All of the motorists escaped the tunnel, leaving their cars behind," Kim Tae-soo told South Korea's YTN.
The air force spokesman said the convoy was heading to a nearby air base carrying Nike missile warheads and boosters.