Saturday’s fatal shooting at the Savin Hill MBTA station is drawing attention to a nearby six-family building that has been the subject of many past complaints from neighbors.

The victim, who was rushed to Boston Medical Center with a gunshot wound to his chest, was identified as 19-year-old Derek Matulina of Dorchester, the city’s ninth homicide this year.

Police cars flooded the area as MBTA officials shut down the trains. Witnesses told police they saw several individuals flee the scene and head down the street to 47-49 Savin Hill Ave. Police took in five individuals for questioning but no arrests had been made as of Wednesday.

Police are familiar with the building, with log incidents dating back to 2009. In April 2011 and April 2010, there were reports of assault and battery, a January 2010 report of vandalism, an October 2009 report of trespassing and a warrant arrest in April 2009.

The six-family’s current owner, My Nguyen of Weston, said the five who fled from the scene were witnesses who ran back to the house because they were scared by the shooting.

Talking to the Reporter while sitting in his truck across the street from the building, Nguyen said he tries to cooperate with police, and added that many of the problems at the building come from tenants inviting friends over.

But state Rep. Marty Walsh, a Dorchester Democrat who lives several blocks away, said the owner must step up and take responsibility. “I’m getting really tired of these absentee landlords,” Walsh said, adding that he is weighing legislative action. “Landlords need to start being held accountable for their property.”

The building has been featured in numerous reports of domestic violence, and Walsh has fielded frequent complaints from neighbors. “People are afraid to walk by it,” he said.

“It’s an exceptionally nice neighborhood,” said Lee Robinson, a local real estate broker. “It’s upsetting to everybody.”

A Boston Police spokeswoman said yesterday that the investigation is ongoing. The homicide unit is urging anyone with information to contact detectives at 617-343-4470 or call the anonymous tip line at 1-800-494-TIPS.