34 Highland Ave., Aug. 27, 12:52 p.m.
This fire started in a top-floor apartment in a 16-unit apartment building, across the street from the Somerville Public Library. At the time, it was not considered suspicious, but it displaced four families, consisting of nine adults and three children. It also closed down Highland Avenue for part of the afternoon.
http://somerville.patch.com/groups/police-and-fire/p/fire-shuts-down-highland-avenue-tuesday