Three diplomats got injured in a mortar shell targeting the Russian embassy in Damascus on Sunday, the Foreign Ministry said. The shell was fired from the hotspot district of Brazeh, where intense clashes have been raging on for days between the rebels and the Syrian government army. \"Three members of the embassy\'s staff received wounds not threatening their lives,\" the ministry said in a statement. An investigation is underway and additional steps are being taken with the help of the Syrian side to tighten security of the Russian diplomatic mission, it said.