Unidentified gunmen fired grenade launchers and automatic weapons early Friday at a Russian hospital treating children injured in the school siege in Beslan earlier this month. No one was harmed in the night-time attack directed at the intensive care unit of the hospital in the southern city of Rostov-on-Don, news agencies reported. Police said the intended target may have been a local businessman housed in the unit rather than children from Beslan being treated in a separate burns ward. More than 330 hostages died in the school tragedy in the republic of North Ossetia at the start of September. A total of 278 are still in Russian hospitals, 179 of them children.