Looks like it turned out to be a false alarm but still... Cargo fire is a scary thing! Heck, any fire on a plane is a scary thing.

From the Glasgow Evening Times

Meanwhile, airline passengers were today involved in a mid-air fire scare when their London-bound aircraft developed problems over the Atlantic.
The Northwest DC 10 jet, with 280 people on board, was forced to divert to Prestwick Airport for a full emergency landing when smoke was detected in the hold.
Emergency services were put on alert at the Ayrshire airport around 8am when the captain decided to bring the aircraft into land.
The Northwest Airlines jet had set off from Minneapolis, Minnesota, bound for Gatwick and was heading over the Atlantic when a light came on the in the cockpit.
A spokesman for Prestwick Airport said: "The plane was diverted to Prestwick which has the capacity for a plane of that size to land.
"When it touched down on the tarmac it was discovered that there had been a false alarm.
"Passengers remained on the aircraft and, following checks, it flew off three hours later."
Strathclyde Fire Brigade sent four appliances to the scene and were on stand-by until the plane landed safely.