WEST HOLLYWOOD (CBSLA.com) — A suspicious package that shut down a stretch of Sunset Boulevard Friday was determined to be harmless, authorities said.

Shortly after 11 a.m., the Sheriff’s Arson/Explosives detailed was sent to the 9000 block of Sunset Boulevard for report of a suspicious package.

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Upon their arrival, deputies located a circuit board with a 9-volt battery, wires and coils sticking out of it, according to the Los Angeles County Sheriff’s Department’s Arson Squad.

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Buildings on either side of the location were evacuated before the device was “rendered safe” by a bomb squad robot and taken for forensic testing, sheriff’s spokeswoman Deputy Guillermina Saldana said.

A search of the area turned up no additional devices, she said.

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Sunset Boulevard, which had been closed between Hammond Street and Doheny Drive, was reopened about 2 p.m.