A mortar round has exploded in Samawah in southern Iraq, close to where Japanese troops have been deployed.
The blast shattered windows, but no injuries have been reported.
About 100 Japanese troops are currently setting up a camp about 6km (4 miles) outside the town, where a total of 600 troops are to be based.
It is Japan's first troop deployment to a combat zone since World War II, and there is much concern in Japan about the safety of military personnel.
http://news.bbc.co.uk/2/hi/middle_east/3481139.stm