LJUBLJANA  - Four people were killed and 28 injured, including eight seriously, when a hot air balloon crashed and caught fire early Thursday south of Ljubljana, authorities said.  There was no information about the dead but the injured included two British citizens and two Italians, “all of whom have been hospitalised,” police spokeswoman Maja Adlesic told AFP. She gave no details about their identity or their condition.  The hospital had earlier talked of three Italians and one Briton among the injured. The accident occurred at around 8:00 am local time (0600 GMT) some 12 kilometres (7.5 miles) south of Ljubljana, a spokesman for the country’s civil protection and disaster relief administration said.