BART police are investigating a stabbing that took place at or near San Francisco's Civic Center BART station, after the victim of the attack was discovered on the platform Wednesday night.

The Bay Area News Group reports that BART police were called to the station at 9:50 p.m. Wednesday, on reports of "a person with stab the station." According to ABC 7, the victim was "discovered on the platform" (that is, the downstairs area where BART riders wait for their train), prompting a closure of the entire station until 11:40 p.m.

According to BART police, it's unclear exactly where (geographically, not on his body) the man was stabbed.

"We're still investigating what happened — if it happened in our station or at the street level," BART police Lt. Mike Hayes told BANG.

No details have been provided on any possible suspects or the victim by BART, which did not return a call from SFist as of publication time. According to KRON 4, the victim was male, and "The extent of the victim’s injuries is unknown at this time, but as of 3 a.m., he is still at the hospital."

As of Thursday morning, no arrests have been made in the case. If you have any information on the stabbing, BART's tip line for criminal investigations within the BART system can be reached at 510-464-7040.