Detroit Fire Department is working at a fire on Detroit's east side that has already involved two homes. 

The fire was reported about 5:30 a.m. in the area of Helen and Charlevoix streets. 

The fire started at a vacant home on Helen Street, a Detroit Fire Department spokesman said. That home had collapsed from the damage by the time firefighters arrived.

The fire then spread to an occupied home next door and caused minor damage to that structure. Everyone who was inside got out safely, no injuries were reported to the residents or first responders.

The cause is under investigation.

This is a breaking news situation; stay with CBS News Detroit for additional details as they are available.