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Key developments in case of 2 slain NYPD officers

FILE - In this Monday, Dec. .22, 2014, file photo, members of the New Rochelle, N.Y. police department place a wreath at a makeshift memorial near the site where NYPD officers Rafael Ramos and Wenjian Liu were murdered in the Brooklyn borough of New York, Monday, Dec. 22, 2014. Police say Ismaaiyl Brinsley ambushed the two officers in their patrol car in broad daylight Saturday, fatally shooting them before killing himself inside a subway station. (AP Photo/John Minchillo, File) FILE - In this Monday, Dec. .22, 2014, file photo, members of the New Rochelle, N.Y. police department place a wreath at a makeshift memorial near the site where NYPD officers Rafael Ramos and Wenjian Liu were murdered in the Brooklyn borough of New York, Monday, Dec. 22, 2014. Police say Ismaaiyl Brinsley ambushed the two officers in their patrol car in broad daylight Saturday, fatally shooting them before killing himself inside a subway station. (AP Photo/John Minchillo, File)

By Associated Press December 26, 2014 3 min read

Two New York Police Department officers were ambushed last weekend by Ismaaiyl Brinsley after he had made threatening posts online, including references to high-profile cases of white police officers killing unarmed black men and a vow to put “wings on pigs.” After shooting the officers, Brinsley ran into a Brooklyn subway station and committed suicide.

The killings of Officers Wenjian Liu and Rafael Ramos have raised concerns in the already tense nationwide debate surrounding police conduct. Some key developments since the officers’ killings:

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PRAYERS AND SUPPORT FOR SLAIN OFFICERS

The Rev. Al Sharpton and the mother and widow of Eric Garner, an unarmed black man who died after what a medical examiner determined was a white officer’s chokehold, prayed for the families of the two slain officers at a Christmas dinner event.