BOSTON — A Boston police officer has been arrested and charged with manslaughter in connection with the fatal shooting of a carjacking suspect last week in Roxbury.

Officer Nicolas O'Malley, 33, is set to be arraigned in the Roxbury division of Boston Municipal Court, the Suffolk District Attorney's office announced Thursday.

Officers responded to a carjacking report and located the stolen vehicle near Linwood Street in Roxbury around 10 p.m. They boxed King in. He didn't comply.

Commissioner Cox said officers gave "many, many commands." King allegedly ignored them, accelerated the stolen car, backed it into a police cruiser, and drove toward officers. O'Malley opened fire.

King was pronounced dead at a local hospital. No officers were seriously injured.

He was charged with possession of a firearm, possession of a large capacity feeding device, and possession of ammunition. The outcome of that case is not immediately clear.

Commissioner Cox confirmed body camera footage exists, but it has not been released. Whether it played a role in the DA's decision to charge O'Malley has not been disclosed.

Mayor Michelle Wu has not publicly addressed the charge.

O'Malley is expected to be arraigned Thursday. The officers involved were placed on administrative duty after the shooting. The Suffolk County DA's investigation is ongoing.

The Boston Police Patrolmen's Association has not yet commented publicly.

It is extremely rare for a Boston police officer to face criminal charges for an on-duty shooting — and the charge is likely to draw significant attention given the department's initial account describing King as an active threat who used the stolen vehicle as a weapon against police.