Rebels in eastern Ukraine shot down a government military helicopter Thursday amid heavy fighting around the eastern city of Slovyansk, killing 14 soldiers including a general, Ukraine's leader said, according to AP. Acting President Oleksandr Turchynov told the parliament in Kiev that rebels used a portable air defense missile Thursday to down the helicopter and said Gen. Volodymyr Kulchitsky was among the dead. Slovyansk has become the epicenter of fighting between pro-Russia insurgents and government forces in recent weeks. Located 100 miles (160 kilometers) from the Russian border, it has seen constant clashes and its residential areas have regularly come under mortar shelling from government forces, causing civilian casualties and prompting some residents to flee.