As many as 20 victims were attacked in a shooting in San Bernardino, California Wednesday morning, according to The New York Times.

The city police department told The New York Times they were handling an “active shooter” attack, while the San Bernardino County Sheriff’s Department said police have reports of one out of three suspects and numerous victims.

The attack is said to have happened inside the offices of Inland Regional Services, a facility that offers services for people with developmental disabilities.

The New York Times said dozens of people fled the building and were herded by the police across the street from the offices to the San Bernardino Golf Club.

The city police are currently looking for three men in a black SUV-style vehicle, CNN said.

President Barack Obama has been notified of the incident, according to CNN. Interviewed briefly by CBS News, Obama said, “We have a pattern now of mass shootings in this country that has no parallel anywhere else in the world.”

The Washington Post reported that this shooting is the second shooting today, and raises the number of mass shootings this year to 355.

San Bernardino Police Sgt. Vicki Cervantes told a local news reporter there were multiple causalities and confirmed fatalities, according to The Washington Post.

The Washington Post reported that Cervantes said the building “had some sort of function, or an event…and during that event, that’s when multiple shooters came in and started shooting.” CNN now said the Center director said a holiday event was occurring during the shooting.