Rat pauses and sneakily pulls out a small cellphone like device. It's cellphone like because it is a cellphone. But it has shit tacked on to let you tune into radio signals and get a transcript on the screen. He starts trying to tune it to the two nearby.
Unfortunately the police are not idiots, and encrypt their radio communications. The encryption must have been changed recently too, since Rat doesn't get anything on his screen besides a bunch of junk characters. The
busty mecha musume in a purple dress spots Rat with his cellphone and turns around to asks him,
"Excuse me, sir, can I help you?" Her partner sighs and waits patiently for them to finish talking, while shooting Rat a half-smile and rolling her eyes.
((I don't know exactly which country you're taking this from, but that's bullshit. If you see a suspect at a crime scene, especially one that occurred very recently, you are well within your rights to shove the bastard in a cell.
Either way, Rat gets trailed by drones for the next few days, right?))
((Standing near a crime does not automatically make you a suspect, and Rat hasn't done anything besides talk to the perpetrators and stand in an alleyway. So they can't really charge him with anything and thus any arrests would be somewhat unlawful.
And yeah, drones. Drones everywhere.))