Pedestrians hit by blow darts on Golden Gate Bridge

Police in San Francisco are asking for the public's help after two people walking on the Golden Gate Bridge were hit with blow darts.

The victims were struck Friday afternoon, the California Highway Patrol said in a statement. They were evaluated by paramedics at the scene and released.

"Right now, we are hoping to narrow down exactly where they were and at what time," said CHP spokesman Andrew Barclay.

The darts are being tested to ensure they were not coated in chemicals. They were about 5 inches long, the CHP said, with one end sharpened to a point. It wasn't immediately clear what they were fired from.

Investigators are working to determine whether any footage exists of the crime, and they are asking anyone who may have seen what happened to contact the CHP.

"I can honestly say I've never heard of anything like this happening, ever," said Barclay.