Fire and police investigators are trying to figure out what touched off a multi-alarm fire at a Chester apartment complex that damaged 25 units and left 55 people homeless.
No serious injuries were reported in the blaze that started on the top floor the three-story in the Wallingford Apartments complex in the 2700 block of Madison Street at the north end of the Delaware County city.
The fastmoving blaze was reported about 12:30 a.m. and declared under control at 1:23 a.m., said Batallion Chief Charles Hopkins. He said firefighters remained at the scene until 4:30 a.m.