The Boston Fire Department reports investigators have concluded a Saturday fire that did an estimated $350,000 in damage to a house on Newburg Street at Belgrade Avenue in Roslindale was caused by "improper disposal of smoking material" on the first-floor porch. Before being knocked down, the fire spread to the second floor and attic.

GoFundMe page for the residents.

The Cambridge Fire Department reports "careless disposal of smoking materials on the rear porch" on the second floor caused a fire that heavily damaged the house at 54 Reservoir St. this morning.

John McMahon, a nearby resident, captured the scene at the fire and the nearby streets after firefighters from Cambridge and surrounding communities began arriving after 7:45 a.m. Read more.

WBZ reports fire investigators have determined that at least one subcontractor working on renovation project on Berkshire Street "carelessly disposed of smoking material" in a recycling bin full of construction debris, sparking that 10-alarm fire last month.

The Boston Fire Department reports firefighters responded to 36 Hall St. at 4:22 a.m. for what turned into a two-alarm fire.

The department identifies the cause as: " careless disposal of smoking materials, 1st floor rear porch." Read more.

The Boston Fire Department blames "careless disposal of smoking material" for a fire called in around 1:45 a.m. on Friday in the rear of 28 Parmenter St. in the North End.

This fire only did an estimated $5,000 in damage, to the roof of a one-story extension to the four-story occupied building, but firefighters were on scene until 3:35 a.m.

A neighbor adds the fire is particularly concerning because workers from a couple of nearby businesses use the rear of 28 Parmenter as a smoking area all the time.

A fire reported around 7 p.m. at 72 Perthshire Rd. quickly went to three alarms and caused an estimated $500,000 in damage, the Boston Fire Department reports.

Fire Investigators determined the cause as careless disposal of smoking material. Point of origin; 2nd floor rear porch.

Read more.

The Boston Board of Health voted today to raise the minimum age to buy tobacco in the city from 18 to 21. That includes e-cigarettes.

The Boston Fire Department reports investigators have determined the cause of a four-alarm fire at 247-249 Washington St. Friday night as "careless disposal of smoking material rear porch of 247."

The fire caused no injuries, but displaced 30 people.

The Boston Fire Department says "careless disposal of smoking material" led to a fire last month that ravaged two apartment buildings on Harvard Terrace.

A spokesman says somebody discarded a still lit cigarette or cigar in an interior stairwell in the rear of 12 Harvard Terrace sometime in the early evening of Sept. 3. The fire spread rapidly up through the building and caused heavy smoke damage in two adjoining buildings.

The Boston Fire Department reports "careless disposal of smoking material" made 12 people homeless and injured a firefighter this morning at 24 Freeman St., right behind the inbound platform at the Red Line Fields Corner station.

The department says the fire started under the 2 1/2-story home's rear porch and went to two alarms after firefighters arrived around 10:15 a.m.

The injured firefighter suffered burns, the department says, adding damage was estimated at $300,000.