BREAKING: LA police in standoff with Lunar New Year mass shooting suspect

Fox News live coverage showed a SWAT team approaching the white van and making entry into it. According to a local news report from FOX 3 Now, a deceased male who is believed to be the suspect was found inside the vehicle.

A witness reportedly told the outlet that at least one bullet hole could be seen one of the van's windows, and that a body appeared to be slouched over in the driver's seat.

The shooting occurred around 10 pm, in a predominantly-Asian neighborhood during a Lunar New Year festival when a man armed with a "high powered" rifle opened fire at the Star Ballroom Dance Studio, about seven miles east of downtown Los Angeles.

The suspect escaped the scene without being apprehended. Hours later, LA County Sheriff Robert Luna released an image and description of the suspect, who appeared to be an adult Asian male wearing a black leather jacket, a beanie, and glasses.

Los Angeles County Sheriff Department's Capt. Andrew Meyer outlined the situation in a press conference early Sunday morning.

"When officers arrived on scene they observed numerous individuals, patrons of the location, pouring out of the location screaming," he said.

"The Monterey Park Fire Department responded to the scene and treated the injured, and pronounced ten of the victims deceased at the scene," he added, noting that an additional ten were transported to local hospitals to have their injuries tended to.

This is a breaking story and will be updated.