The raid began in broad daylight...
Though that might seem counter-intuitive considering that they didn't want to raise any alarms, they couldn't do this at night because that's the time when the cult was active.
As usual, Arishem and the Shadow Runners were leading this operation. The entire force of their branch in this city was all utilized, though they minimized what the rest knew because this was a sensitive mission.
Arishem blended into the crowd with his men and reinforcements. Nobody could sense their movement, they're using several tools to increase their chances of not getting caught to help them move around freely.
Through signals, Arishem gave orders to the rest. He tasked the first squad to create some distraction while the others were to quietly and swiftly infiltrate the hidden base.