The JP institution Same Old Place became the site of a shooting Sunday night around 7:30 pm.

Police Commissioner Ed Davis confirmed in a press conference and that three people were inside the beloved pizza joint on Centre Street early Sunday night when a fight broke out. One of the individuals drew a firearm. The fight began inside the establishment, but moved outside, Davis said. Davis didn't say how many shots were fired, but Deputy Superintendent Rafael Ruiz later said all shots were fired inside the establishment. Davis also said all the shots were fired inside the restaurant.

That conflicts with the testimony of one witness, who said he saw two men exchange gunfire on Centre Street.

A fourth person, a female, was injured in the leg by either a bullet or shrapnel. The commissioner said she was walking by across the street when she was struck.

The individuals involved are said to be between the ages of  20 and 25.

Initial reports said Boston Police detectives found one victim in the street, two more outside the establishment and then another inside.

One witness, only identified as John,who lives in Jamaica Plain said he was headed out of JP Licks when he heard six or seven shots fired. He said he saw a man running toward City Feed from Same Old Place, exchanging gun fire with another man.

"What it was like was like the Old West," he said. "This doesn't happen here."

Scanner reports say an SUV was seen fleeing from the scene toward Pond Street.

Two of the victims were transported to Beth Israel hospital and another to Brigham and Women's in traumatic arrest and another to Boston Medical Center.

As of 10:22 pm, three of the persons injured were in critical condition, according to police media relations. One suffered minor injuries. One person is in custody at a hospital.

Centre Street is shut down completely at this time and is expected to be closed for at least the next two hours (as of 9:30 p.m.).

While JP Center has a reputation as being relatively free of violent crime, a clerk at the Tedeschi's at Centre and Eliot was gunned down last December on the day after Christmas.

[Editor's note: An earlier version had the wrong title for Superintendent Rafael Ruiz.]