Connection to the mail bomber?
"The Tree of Life Congregation dates back to 1864, and was originally in downtown Pittsburgh, said Alvin K. Berkun, a former rabbi at Tree of Life and now rabbi emeritus, who stayed home from services on Saturday to tend to his sick wife. [How convenient!]
His sonโs synagogue is in Aventura, Fla., the hometown of a man who was arrested Friday for mailing pipe bombs to leading Democrats and Trump critics."
https://www.nytimes.com/2018/10/27/us/active-shooter-pittsburgh-synagogue-shooting.html