Some 1,500 bombs left by the Japanese military during the World War II were unearthed recently in a construction site in Qiqihar, Heilongjiang province, Xinhua News Agency reported on Wednesday.

Qiqihar police said they received a report that three bombs had been unearthed on a construction site near a primary school on Sept 28.

Police went to the site and found 1,500 bombs made in Japan, seven of which were gas bombs. They closed the site in preparation for the removal of the bombs.

Qiqihar was occupied by the Japanese army for 14 years in the 1930s and 1940s. The Japanese buried large number of bombs in the city before they left.