LAFAYETTE, La. (AP) — Investigators are looking into a rash of deliberately set vacant house fires in Lafayette.

Officials say all the fires except the first occurred early in the morning, and all were set while it was dark. No one has been hurt.

Lafayette Fire Department spokesman Alton Trahan tells The Advocate Lafayette police and fire investigators, along with arson detectives with the state Fire Marshal's Office, have gone into seven dwelling to locate where the fire started and look for evidence of how it started.

Fire Chief Robert Benoit said he's telling residents to be vigilant and to look especially for strangers roaming the neighborhood who do not seem to belong.

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