Who was the gunman behind the deadly Logan Circle shooting?

New details are emerging about the gunman behind the deadly shooting in D.C.’s Logan Circle, including a possible dispute involving the building’s management.

Police said the suspect lived in an apartment in the building in the 1500 block of 15th Street NW. He was also a member of Vida Fitness, the gym where the shooting began Thursday morning.

Just before 8 a.m., police received a call about a shooting inside the gym. Officers arrived within about 30 seconds and found one person shot inside. That person died at the scene.

RELATED | Gunman dead after killing 1, injuring 4 in mass shooting at gym in DC’s Logan Circle

Police then found four other people who had been shot nearby. All four were taken to the hospital, including one person who suffered critical injuries. Police eventually forced their way into the apartment and found the suspect with a self-inflicted gunshot wound. He later died.

Who is the gunman:

Interim Metropolitan Police Department (MPD) Chief Jeffery Carroll said investigators believe the suspect may have had a conflict involving the apartment building, but details remain limited.

“We do have an idea who he is. We believe there was some sort of a conflict with the apartment building, but we don’t have much more than that,” Carroll told reporters. “That will be part of the continuing investigation.”

As of Thursday afternoon, police have only identified the gunman as a “heavy-set white male.”

7News is aware of social media posts circulating online in which the suspect appears to detail grievances with the building’s management and a civil lawsuit involving the property.

Authorities have not confirmed the individual’s identity or the social media posts.

Possible dispute with building management

D.C. Councilmember Brooke Pinto shared additional details about a possible motive, saying the suspect had been involved in litigation this year with the building manager over the condition of his condo.

Pinto said she believes the building manager was targeted and shot and killed during the incident.

She also said the suspect set parts of the apartment building on fire after the shootings and while barricaded inside.

Investigators have not established a definitive motive for the shooting.

This post was originally published on Fox 45 by Sinclair Media Group.