The Waltham Fire Department was called to 53 Highland Street on Monday, Sept. 5 at 1 p.m. following reports of heavy smoke. The two-alarm fire displaced 11 people, but no one was inside the house by the time firefighters arrived, according to a report in The Waltham News Tribune.

Approximately 30 Waltham firefighters and four Newton firefighters tended to the flames and the scene was cleared at 4:32 p.m., according to The Waltham News Tribune. The fire started outside before moving into the house, Waltham Fire Lt. Scott Perry told The Tribune.

The causes of the fire are still unconfirmed, and damages are estimated at $100,000.

“I was driving to class when I noticed a ton of traffic and police cars ahead. I saw huge clouds of thick smoke coming up from a house,” said Stephanie Heimler ’17. “I immediately thought of my friends who live on Highland Street and messaged them immediately to make sure they were okay. The smoke was so thick, I could smell it from campus and needed to close my window in the Mods.”