Employers should keep closer tabs on the workers they’ve let go in light of the fired reporter who executed his former TV station colleagues on live television, Police Commissioner Bill Bratton warned Thursday.

“It might be a matter of watching these individuals through the public social media after they leave a company to ensure that they’re not making threats,” the top cop told radio host John Gambling on 970 AM radio.

He added that Vester Lee Flanagan II “clearly” committed a hate crime when he gunned down Alison Parker and Adam Ward on Wednesday.