ALAMEDA (AP) — Officials say human bones found by a construction worker at a home in Alameda may be Native American.

Alameda police Lt. Wayland Gee tells the East Bay Times the bones appear to belong to an adult and were discovered at the rear of an Alameda home, where workers have been building an addition.

Gee says the remains were turned over to the coroner’s bureau of the Alameda County Sheriff’s Office, which will investigate their origin.

Mound Street, where the bones were found, is named after one of a string of “shellmounds” constructed by the Ohlone tribe along the shore of San Francisco Bay before Europeans arrived.

When the mound was demolished in the early 1900s to build homes, workers reportedly found the remains of about 450 people.

© Copyright 2018 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.