The three-day aftermath of a mass shooting in Kalamazoo, Mich.

Sunday morning I was summoned by The Washington Post to head to Kalamazoo, Mich., where a shooter went on a rampage Saturday night, killing six people. Arriving 12 hours after his arrest, I found a city in shock: Neighbors in disbelief, community members worried how their city would look in the media, and of course, memorials. There is sadness in how these events now seem to follow a certain pattern.

My first story established the facts, as much as we knew late Sunday. The second story covered the arraignment of the shooter, among other details that emerged that day. The final story talked of possible motives.

What is unnerving is how this case apparently is off-script when it comes to mass shootings: The violence was random, the shooter had no criminal record or history of mental illness and no affiliation with hate beliefs, and he surrendered quietly to authorities. The investigation will last months, so I’m sure more details will emerge then.