(Refiles to fix typo in pagagraph 13) * Police confirm four attacks, other reports say up to 11 * Agency shows images of women covered in bandages * Interior Ministry says investigating By Michelle Moghtader DUBAI, Oct 20 (Reuters) - Iran has arrested a number of people suspected of throwing acid at women deemed to be wearing Islamic headcovering improperly, authorities said on Monday, following a ****** of attacks in Isfahan that have caused widespread anger. ...