FREMONT -- A busy street in the city's Centerville district, closed for about two hours Wednesday morning, was reopened after officers determined a suspicious device found near a bus stop was harmless.

Thornton Avenue between Blacow Road and Dusterberry Way was shut down just after 9 a.m., and the Alameda County Sheriff's Office bomb squad was called out after someone called 911 to report a suspicious device near a bus stop near the 37000 block of Dondero Way, said police spokeswoman Geneva Bosques.

Police initially described the device as a black, cylinder-shaped canister with wires and other similar parts hanging out of it.

Sheriff's Office spokesman J.D. Nelson later said the object turned out to be a microphone.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.