The arrests bring to six the number of those detained for threats against the New York Police Department since officers Rafael Ramos and Wenjian Liu were shot on Saturday by a gunman seeking revenge for unarmed black men killed by police.
Tyrone Melville, 41, of Manhattan, was arrested on Wednesday after he allegedly called the switchboard of Brooklyn's 84th Precinct, where the slain officers were based, said Sergeant Carlos Nieves, a police spokesman.
Requesting to speak to Ramos, Melville asked if the bullets had been removed from the dead officer's head so "he could kill more cops," Nieves said.
Melville was charged with making terroristic threats, a felony, and aggravated harassment, a misdemeanor.