Six people are homeless after an early morning fire on Beloit’s near east side.  Firefighters responded about 2:00 a.m. Friday to a residential fire in a three-unit apartment building on the 300 block of Euclid Avenue.  Battalion Chief Bill Hyde says the occupants were alerted by a smoke detector and were exiting the building as firefighters arrived.  Hyde says damage was contained to the second story.  One occupant did go to the hospital with a non-fire related injury.  The cause is under investigation.