Bijan Ghaisar's family demands answers 1-year after his death

Family and friends of a man who was shot and killed by U.S. Park Police officers gathered Tuesday outside of the U.S. Department of Justice in Washington, D.C. to demand answers one year after his death.

Bijan Ghaisar's sister, Negeen, his father, James, and several others stood in frigid temperatures holding signs that read "One Year No Justice" and "Remember Bijan Ghaisar."

"We don't know anything," Negeen told FOX 5's Bob Barnard. "It's been one year today - exactly - since my brother took his last breath and we have heard nothing. The only information we have is what's on that video tape and what everyone else knows publicly."

The video she refers to was released by Fairfax County Police in January 2018 and shows parts of a chase and shooting involving officers and Ghaisar. According to a police report, Ghaisar, was shot on Nov. 17, 2017, in Fairfax County by two U.S. Park Police officers. The shooting was preceded by a brief chase police believe began after a fender-bender on the George Washington Parkway in Alexandria. Ghaisar died 10 days later.

"I think it goes beyond exactly knowing what happened. I want to know why," Negeen said. "Particularly why all nine of those shots were fired. There should be an answer for every single time a gun is shot and fired."

A recently released report from Fairfax County Police confirmed the family's belief that Ghaisar was not armed and no drugs were in his vehicle. U.S. Park Police have yet to give an explanation as to why officers shot Ghaisar.

"I think all of us that are here right now are in complete shock," Negeen said. "It doesn't feel real."

Previous FOX 5 Coverage:

Fairfax County man fatally shot by US Park Police was unarmed, according to police report

US Park Police chief confronted about deadly shooting of Bijan Ghaisar

Bijan Ghaisar Shooting: Family sues nearly 9 months after US Park Police fatally shoot accountant

Nearly 7 months after US Park Police fatally shoot Bijan Ghaisar, investigation returns to scene

US Park Police chief cancels meeting with Norton, Beyer regarding Bijan Ghaisar shooting

Bijan Ghaisar's family and friends push for answers in US Park Police shooting death

Bijan Ghaisar Shooting: Ex-federal prosecutor questions US Park Police's use of deadly force

Video of US Park Police fatal shooting of accountant released by Fairfax County police

Fairfax County police say US Park Police fatal shooting of accountant caught on dashcam

Police report details traffic accident that took place before Va. man fatally shot by US Park Police

Remembering Bijan Ghaisar: Vigil held for McLean accountant shot, killed by US Park Police

Virginia man shot by US Park Police after chase dies at hospital, family says

FBI investigating shooting of chase suspect by US Park Police officer

Police: Hit-and-run suspect shot by officers in Alexandria after leading them on chase, crash