German police is now saying that there's no shooter on the run. Which means that the shooter may be among the dead. That being the case, and since we know JWs don't carry weapons for selfdefense, perhaps the shooter committed suicide?
From Associated Press:
"Vehren said police were alerted to the shooting about 9:15 p.m. and were on the scene quickly. He said that after officers arrived, they heard a shot from an upper floor and found a person upstairs who may have been a shooter. He said police did not have to use their firearms.
Vehren said there was no immediate indication that a shooter was on the run and that it appeared likely that the perpetrator or perpetrators were either in the building or among the dead."
https://apnews.com/article/germany-shooting-hamburg-fb175f5bcc195d9c32df0b1a49aea5ae