BERLIN (AP) — Police in Germany say a World War II bomb has exploded at a construction site next to a busy railway line in Munich. The fire service said the blast on Wednesday injured four people. One of them was seriously hurt. A column of smoke was seen rising from the site near a train station. The site is located on the approach to Munich’s central station, which is a bit over a kilometer (about a half-mile) to the east. Trains to and from that station were suspended, but later resumed. Unexploded bombs are still found frequently in Germany even 76 years after the end of the war. They are often discovered during work on construction sites.