MOSCOW, Shawwal 14, 1435, August 10, 2014, SPA -- Five Ukrainian soldiers, who were detained after crossing the border into Russia, have been released back to their unit, which is fighting separatists in eastern Ukraine, Interfax news agency quoted a Russian law-enforcement source on Sunday as saying, according to Reuters. The five were among some 300 Ukrainian soldiers and border guards that Ukraine said were forced by fighting to cross into Russia on Monday. Most were returned to Ukraine but Russian investigators said on Friday the five were detained on suspicion of shelling civilian areas of eastern Ukraine and firing into Russia - a frequent Russian complaint against the Ukrainian military. "The transfer of the battalion commander of the 72 brigade and four subordinate officers took place overnight to Sunday," the security services source told Interfax. The handover took place at the Chertkovo checkpoint, on the border between eastern Ukraine and Russia's Rostov province, the source said. --SPA 11:36 LOCAL TIME 08:36 GMT www.spa.gov.sa/w