No one injured in three-alarm blaze in Milton

Firefighters from Milton, Boston and Randolph battle a 3-alarm fire at 79 Hudson St. in Milton on Thursday.Scott Eisen for The Boston Globe/Globe Freelance

A three-alarm fire tore through the back of a home in Milton on Thursday.

Milton Fire Chief John J. Grant said the fire began on the back porch and eventually extended to the attic. The call came in at 3:56 p.m., and the fire was contained shortly before 6 p.m., according to the Milton Fire Department.

Although one occupant was at home, there were no reported injuries, Grant said. There was no indication of what caused the blaze at 79 Hudson St., officials said.

At about 6 p.m., several of the home's windows were broken, though there were no burn marks visible from the front of the two-level house. In the back, near the first- and second-level porches, parts of the house were burned and firefighters ripped at pieces of the wall. Other parts of the back porch had collapsed.

A woman who identified herself as a grandmother of one of the home's occupants said at least three people lived there, including her grandson, his fiancée, and their daughter.