Halloween festivities ended early for partygoers after a shooting broke out on Castro Street Tuesday night, resulting in 10 people injured.

The shooting, which occurred at 10:40 P.M., was on Market and 15th Streets.

Public Information Officer Sgt. Neville Gittens said last night that initially five people were shot, with one sustaining a life-threatening injury.

According to an SFGate.com article released Wednesday morning, the reported number of people wounded increased to 10 and may have been gang-related, with two “persons of interest” in custody.

“We believe it was all one incident,” Gittens said last night around 11:30 p.m. “We have some people detained, whether or not they are involved in the shooting is unknown at this point.”

The San Francisco Police Department said they would not be releasing any information because they were still gathering information about the incident. Phones calls made to Gittens in the morning were not returned.

SF State student Vi Lé, 19, a junior biochemistry major, who was at a party one block away from the shooting, said he heard about the incident from a person at the party.

“Somebody was running through the house screaming … people were shot. I started freaking out,” said Lé. “It’s really frightening, thinking about maybe being shot. I’d rather think of my safety first rather than traveling outside and being stupid.”