So we get a call from a resident that was abroad. I hear snapping
fingers coming from the front desk, trying to get our attention. When
he had our attention, he puts the phone on the table, and turns it on
speaker.

At the time, nobody realised about the time difference. It was only a
couple of hours later during my break that I thought to check.
(beat)
They both happened at the exact same time.

At this point, it became a joint effort, instead of two murders, we
looked at it as one. Non of the facts added up.