SAN FRANCISCO (CBS SF) — A suspicious package found on a Muni bus forced Marina residents to shelter in place for more than an hour Thursday afternoon, authorities said.

Police received a report of a suspicious item on a bus in the area of Marina Boulevard and Laguna Street at 12:11 p.m., according to Officer Robert Rueca.

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The bus was evacuated and vehicular and pedestrian traffic was closed off on Marina Boulevard between Laguna and Buchanan streets.

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Residents and businesses in the area, including the nearby Safeway grocery store, were asked to shelter in place while police investigated.

Muni spokesman Paul Rose said the 43-Masonic route was impacted by the incident.

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A 1:57 p.m. the package was deemed to be harmless and the shelter-in-place was lifted. No injuries were reported.