Reverend Al Sharpton attends the 2015 Global Citizen Festival to end extreme poverty by 2030 in Central Park on September 26, 2015 in New York City.

Reverend Al Sharpton attends the 2015 Global Citizen Festival to end extreme poverty by 2030 in Central Park on September 26, 2015 in New York City.

*The Rev. Al Sharpton is set to deliver remarks at Wednesday’s funeral for New York City Police Officer Randolph Holder, who was shot to death last week while on patrol in the city’s East Harlem neighborhood.

The long-time critic of the New York Police Department was asked to speak at the service by Holder’s father, a spokesman for Sharpton said.

Officer Randolph Holder

Officer Randolph Holder

Holder, 33, was killed by a single shot to the head on Oct. 20, the fourth New York City officer to be killed in the line of duty in the last 12 months.

At a press conference on Monday, police officials said they have confirmed that a gun recovered by divers on Sunday from the Harlem River is the weapon that was used in Holder’s killing.

Tyrone Howard

Tyrone Howard

The suspect charged in the murder, 30-year-old Tyrone Howard, is due to appear in court on Tuesday, the same day mourners will gather at Holder’s viewing in Queens.

Holder’s funeral is expected to draw thousands of police officers. Afterwards, his body will be flown to his native Guyana for burial.

Sharpton has often led protests against police brutality, including last year after the death of Eric Garner, an unarmed black man who died after a white police officer put him in a chokehold.

He is expected to speak about gun violence and the need for unity between police and the communities they patrol, Sharpton’s spokesman said.