Even though it was an emergency Loki was running at a pace that Matsuri could follow and as he was doing that he was also scanning the surrounding area with his mana sensing. After a quick scan, he spotted a few familiar people in the vicinity, he also noticed that there were some people moving in a suspicious way.
Michael and Shin were with the other martial artist trying to help the normal citizen, and surprisingly enough even Kira was somewhere in the sea of people. On the other hand, he could not sense Tang Ao's presence who he had spotted before entering the theatre. It would've been ideal if he could sense him.