Images from the July 3, 2019, funeral for retired NYPD Det. Luis Alvarez, 53, who died Saturday in a Rockville Centre hospice of complications from colorectal cancer diagnosed in 2016. Just weeks before he died of cancer linked to his work at Ground Zero, Alvarez pleaded with Congress to replenish the September 11th Victim Compensation Fund, which provides benefits to first responders and volunteers struggling with health problems linked to toxic chemicals at the site.

Credit: Newsday/Alejandra Villa Loarca

Retired NYPD Det. Luis Alvarez's wife, Lainie, and their sons during his funeral on Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Newsday/J. Conrad Williams Jr.

Lainie Alvarez, the wife of Luis Alvarez, a former NYPD detective who died just weeks after testifying on behalf of other 9/11 responders, holds his flag after his service in Immaculate Conception Roman Catholic Church in Astoria, Queens, on Wednesday.

Credit: Newsday/J. Conrad Williams Jr.

Police passing the flag after the funeral service for retired NYPD Det. Luis Alvarez at Immaculate Conception Roman Catholic Church in Astoria, Queens, on Wednesday. Alvarez pleaded with Congress to replenish the 9/11 victims' fund weeks before he died of cancer linked to his work at Ground Zero.

Credit: AP/Richard Drew

The coffin of retired NYPD Det. Luis Alvarez is carried from Immaculate Conception Roman Catholic Church in Astoria, Queens, on Wednesday.

Credit: Newsday/J. Conrad Williams Jr.

Phillip Alvarez leaves Immaculate Conception Roman Catholic Church behind his brother Luis Alvarez's coffin in Astoria, Queens, on Wednesday.

Credit: Newsday/Alejandra Villa Loarca

The funeral for retired NYPD Det. Luis Alvarez at Immaculate Conception Roman Catholic Church in Astoria, Queens, on Wednesday.

Credit: Newsday/J. Conrad Williams Jr.

The coffin of Luis Alvarez is carried into Immaculate Conception Roman Catholic Church in Astoria, Queens, on Wednesday.

Credit: Newsday/J. Conrad Williams Jr.

The procession makes it way up Ditmars Boulevard in Astoria, Queens, for the funeral Wednesday of Luis Alvarez, the former NYPD detective who died less than a month after testifying on behalf of other 9/11 responders.

Credit: Newsday/J. Conrad Williams Jr.

Former "Daily Show" host and activist Jon Stewart salutes as the coffin of retired NYPD Det. Luis Alvarez, who testified with Stewart on behalf of other 9/11 responders, passes in Astoria, Queens, on Wednesday.

Credit: Newsday/Alejandra Villa Loarca

Jon Stewart stands as retired NYPD Det. Luis Alvarez's coffin goes by at Immaculate Conception Roman Catholic Church in Astoria, Queens, on Wednesday.

Credit: Newsday / Alejandra Villa Loarca

Retired NYPD Det. Luis Alvarez's funeral was held Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Newsday/Alejandra Villa Loarca

The funeral service for retired NYPD Det. Luis Alvarez on Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Newsday/Alejandra Villa Loarca

A sea of blue uniforms lined the streets for the funeral for retired NYPD Det. Luis Alvarez on Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Newsday/Alejandra Villa Loarca

Phillip Alvarez and Lainie, brother and wife of Luis Alvarez, at the retired NYPD detective's funeral Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Newsday/Alejandra Villa Loarca

Hundreds attend the funeral for retired NYPD Det. Luis Alvarez on Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Newsday/Alejandra Villa Loarca

Former "Daily Show" host and activist Jon Stewart at retired NYPD Det. Luis Alvarez's funeral on Wednesday at Immaculate Conception Roman Catholic Church in Astoria, Queens.

Credit: Howard Schnapp

Officers carry NYPD Det. Luis Alvarez's coffin out of Towers Funeral Home in Oceanside to head to his funeral service in Astoria, Queens, on Wednesday. 

Credit: Howard Schnapp

Luis Alvarez's wife, Lainie, and brother Phillip Alvarez, walk behind Luis Alvarez's coffin as they leave Towers Funeral Home in Oceanside on Wednesday.

Credit: Howard Schnapp

Officers carry out Luis Alvarez's coffin as they leave Towers Funeral Home in Oceanside Wednesday for the retired NYPD detective's funeral service.

Credit: Howard Schnapp

The coffin of Luis Alvarez leaves the funeral home in Oceanside on Wednesday.

Credit: Howard Schnapp

Residents line Lincoln Avenue in respect as the coffin of Luis Alvarez, the retired NYPD detective who made a plea to Congress to replenish the 9/11 victims' fund before he died of cancer related to his time at Ground Zero, leaves the funeral home in Oceanside on Wednesday.

Credit: Howard Schnapp

Residents line Lincoln Avenue in respect as Luis Alvarez's coffin leaves the funeral home in Oceanside on Wednesday.

Credit: Howard Schnapp

Residents, many with American flags, line Lincoln Avenue in respect Wednesday as the coffin of retired NYPD Det. Luis Alvarez leaves the funeral home in Oceanside.

Credit: Howard Schnapp

Motorcycles from the NYPD line up as the coffin carrying retired Det. Luis Alvarez, who pleaded with Congress to replenish the 9/11 victims' fund before he died of cancer related to his time at Ground Zero, leaves the funeral home on Wednesday in Oceanside.

Credit: Newsday/J. Conrad Williams

Police stand near a sign at Immaculate Conception Roman Catholic Church in Astoria, Queens, where hundreds attended the funeral for retired NYPD Det. Luis Alvarez on Wednesday.

Credit: Pool

Retired NYPD Det. Luis Alvarez as he testified June 11 at a House hearing on the September 11th Victim Compensation Fund on Capitol Hill in Washington.

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