The man who shot two New York Police Department officers was reportedly using Waze, a community-based traffic and navigation application, in order to keep track of police movements, according to

Ismaaiyl Brinsley, who shot his girlfriend first, and then fatally killed two officers and himself, has been using the Waze app, according to

It is not clear whether the Waze app led Brinsley to the officers her fatally shot, but a screenshot shows he was using the app, which allows users to see police movements, traps, accidents and any other hazard on the road, reported.

In the screenshot, Brinsley thanks a friend of his on Instagram for pointing out the app is not "updated in real time" so it's not that "reliable," according to Breitbart.

Applications that monitor or show updates for any type of police activity have become more popular due to their accessibility, Breitbart reported. Apps for police scanners or police stops are usually free, or low cost.

Smartphone applications monitoring police activity have grown in popularity over the past few years due to decreased cost, portability, and accessibility to average citizens.