Authorities in San Francisco investigating the murder of a passenger on a BART train were reportedly unable to use up-close security footage of the actual shooting because the cameras mounted inside the train car were decoys, The San Francisco Chronicle reported, prompting security concerns in the city's transit system.

Two police sources told the paper that the close-range shooting Saturday evening was not captured on video because of the possibility the cameras on the train were decoys. The only images police have to work with are photos taken by station cameras of a slim, tall man in a green jacket.

BART police did not elaborate in detail on the use of these decoy cameras, but Police Chief Kenton Rainey, at a press conference Wednesday, said, “If you want to give me more resources, I’ll take them.”

BART officials called the news of decoys “deeply concerning,” and a meeting is scheduled for today.

The shooting occurred at about 7:46 p.m. at the West Oakland Station. The gunman is still at large. The victim was described as a foreign national in his 20s and identification is pending from the coroner’s office.

The gunman was reportedly identified as an African-American male in his late 20s, about 6 feet, 2 inches tall and slim. He was wearing a hoodie, dark pants and a backpack, reported.