If this whole thing turned out to be fake, he could say that he received an anonymous message and acted upon it! Some of his peers might mock him for that, but what if this was true?!
In the end, he believed that it was better to be safe than sorry.
He quickly sent messages to enforcers and the police to be on red alert before calling the temporary head of the intelligence department.
"Yes, city lord?"
"Pause all work you are doing now and tell your team to gather data from every person who entered this city in the last twenty-four hours! Check each of their identity and filter out the suspicious ones!"
"For what, city lord?"
"Just do as I say! I will explain to you via a message after five minutes! After you filter out the suspicious ones, send their identities to various police departments!"
