HAMILTON (Mercer) — Officials say long-term water damage caused a house collapse in New Jersey that killed a woman and seriously injured her two daughters.

A report issued Tuesday by Hamilton Township's Division of Engineering cited water penetration and aging materials as the main factors in the collapse that occurred shortly before 7 a.m. Monday.

Water penetration through an exterior wall spurred extensive deterioration that caused a block to disintegrate, the report stated, which resulted in several floor joists slipping off their supports.

Authorities say 38-year-old Tika Justice shielded her 16-year-old daughter as the structure came down. The teen and her 20-year-old sister survived the collapse but remained hospitalized Tuesday.

The names of Justice's daughters and further details on their conditions have not been released.

(Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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