Residents in a Granite Bay neighborhood have been told to shelter in place as authorities investigate suspicious circumstances at a home Monday morning.

A quiet Granite Bay neighborhood was rocked by tragedy after two people were killed this week. Deputies responded to the home around 8 a.m. Monday after receiving a report of "suspicious circumstances.

A man was detained Monday in Granite Bay after deputies began investigating “suspicious circumstances” that prompted area residents to shelter-in-place, according to a Placer County Sheriff’s Office news release.