Paramedics treated two tourists in California after they were hit by blow darts while walking across San Francisco's iconic Golden Gate Bridge on Feb. 12.
“I've never heard of something like this,” said California Highway Patrol spokesman Andrew Barclay, reports The Los Angeles Times. “It seems very random, and it doesn't appear that either of the victims was targeted for any reason specifically. Neither of them had any arguments.”
Barclay said the 5-inch-long dart pierced 2 inches deep into the thigh of a male tourist and the kneecap of another female visitor, the San Francisco Chronicle reports.
While both were examined by paramedics, they were released without requiring further medical treatment.
Authorities believe the darts may have been fired by a blowgun from a car and are investigating the case.
Authorities say they are testing the darts to figure out if they have any kind of poison and looking for videos of the incident, but don't know of a motive.
"It was definitely one of those situations where you ... wonder why would somebody do this," Barclay said. "It is really just reckless, careless, there's no purpose to fire those darts ... without the intention of harming somebody."
This is not the first incident in California involving blow darts this week to capture national attention.
Animal control officers say somebody has been shooting birds in Newport Beach, California.
Authorities discovered four injured birds on Feb. 11.
The projectiles are about 8 inches long and are believed to have been fired from a blowgun.
"I can't fathom that kind of activity or why someone would want to do this," Newport Beach police spokeswoman Jennifer Manzella said. "It's just really sad."
Because the birds were able to fly, officials couldn't catch them to examine them or provide treatment. Officials believe there may be more injured birds out there as many have reported seeing other injured birds.
"We're not sure if the birds that were reported were the same birds that had been spotted or if there are more birds out there," Manzella said.