Seven people have been arrested in New York and charged with making threats against police officers.
The arrests come after the killing of two patrolmen who were shot in their squad car on Dec. 20, Bloomberg Businessweek reports.
Police spokesperson Officer Sophia Mason said six were charged with making threats of a terrorist nature through social media or in phone calls to police.
The seventh, 38-year-old Elvin Payamps from Queens, was overheard talking on his phone about killing police. He was arrested on Wednesday on charges of marijuana and illegal gun possession.
Mayor of New York Bill de Blasio has asked people in the city to report any threats against police that they see posted online.