SAN FRANCISCO (CBS/AP) — The agency that manages the Golden Gate Bridge is asking Sen. Dianne Feinstein for help in restricting the rising number of remote-controlled drones that have been buzzing the famous span.

Golden Gate Transportation District General manager Denis Mulligan tells the Marin Independent Journal that the unmanned aerial devices pose safety and security threats to the bridge, which the U.S. Department of Homeland Security designated as a potential terrorist target after the Sept. 11, 2001 attacks.

Mulligan says drones have been flying past security fences and sensors into areas where photography is prohibited. And he says one of the machines recently crash-landed on the bridge’s roadway.

The bridge district is asking Feinstein and the Federal Aviation Administration for regulations that would allow the agency to cite drone operators for trespassing.

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