The fire, which started about 11:10 p.m. in the 200 block of Grace Street, started in a lower apartment. The cause of the fire has not been determined yet, said John Callaghan, deputy chief for the Tonganoxie City Fire Department.

He said one unit was completely destroyed by heat and fire and there were different levels of smoke and water damage done to the remaining units.

The American Red Cross, as well as several area EMS and fire units, were on scene to assist the families.

No one was injured, Callaghan said.