Four dead, eight injured as soldier opens fire on Iran military base: army

At least four soldiers were killed and eight injured when one of their colleagues opened fire on a military air base in southern Tehran on Sunday, the Iranian military said in a statement.The incident was "probably related to psychological problems of the soldier who suddenly started firing on his comrades," the statement said.State television reported a similar incident last month when a serviceman opened fire at a barracks in Abyek, around 40 kilometres northwest of Tehran, killing three and i