Germany: Four injured after World War Two bomb explodes close to Munich's busiest train station

Four people have been injured - one of them seriously - after a Second World War bomb exploded at a construction site near Munich's main train station.

The old 250kg aircraft bomb exploded while drilling work was being done at the construction site near Donnersbergerbruecke station on Wednesday, German police said.

"There is no danger outside the immediate area," police told CNN.

A column of thick smoke was seen rising from the cordoned-off site in the city, where emergency services are currently working.

Trains to and from the station, one of Germany's busiest, were suspended and some local trains were evacuated.

There was no damage to the tracks and train services in and out of the station resumed mid-afternoon, the fire service said.

Unexploded bombs are still found frequently in Germany - even 76 years after the end of the Second World War, and often during work on construction sites.

Around 2,000 tons of live bombs and munitions are discovered every year in the country, according to Reuters.

They are usually defused or disposed of in controlled explosions, a process that sometimes entails large-scale evacuations as a precaution.

Bavaria’s state interior minister, Joachim Herrmann, said authorities must now investigate why the bomb that exploded on Wednesday was not discovered earlier.

He said such construction sites are usually scanned carefully in advance for possible unexploded bombs.

The construction site for a new commuter train line, where the bomb exploded, is located on the approach to Munich’s central station, which is about half a mile to the east.