Southern states in the US are being battered by a heavy storm, with deaths, injuries and widespread damage reported. <br /><br /> A tornado in Alabama is thought to have killed four people.<br /><br /> Other twisters have been reported elsewhere, with flooding also reported in some parts of the south.<br /><br /> One elderly man is reported to have drowned in flood waters.<br /><br /> Tens of thousands of people are also without electricity as strong winds bring down power lines.<br /><br /> Officials say the weather is expected to improve over the next 12 hours.<br />
