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WASHINGTON (WUSA) -- Funny, caring, and hard-working. That's how 38 year-old Anthony Chambers was remembered on Monday night by friends and family who gathered at a candlelight vigil three days after Chambers died in police custody.

It was right around three o'clock Friday afternoon when, according to DC police, four officers were called to the Unit block of P Street Southwest to help several members of the Department of Mental Health who were apparently interacting in some way with Chambers. When police arrived, they say Chambers attacked the officers, at which point Chambers was put in handcuffs, lost consciousness, and then died after being taken to the hospital.

But that's not at all what happened, according to Chambers's sister, who says she was in the apartment when her brother was attacked, and killed, for no apparent reason, by police.

"What they did is they started restraining my brother and started choking him, they strangled him to death," said Valentina Chambers.

DC Police would not comment on the case, beyond saying that Anthony Chambers's death is now under investigation, and that the cause of death had not yet been determined by the Medical Examiner. A source tells 9News Now that one of the police officers involved suffered several broken facial bones after being attacked by Chambers.