UPDATE 5:45 p.m.
Firefighters have quelled the majority of flames at both houses, but are still fighting a few hotspots inside one of the homes. They have not yet determined what caused the blaze, Sandusky fire Chief Dave Degnan said.
UPDATE 4:20 p.m.
Margaretta and Perkins township fire departments have been called in for mutual aid.
UPDATE 4:00 p.m.
All occupants are out of both homes.
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Sandusky fire is on the scene of a house fire at 604 Shelby Street, near the intersection of Monroe and Shelby.
A second house caught fire as well.
There was initial concern of people inside the second home but it was found everyone is out of both homes.
They have asked police for help with crowd control.
Check back for further information.