An obese woman who had difficultly moving because of her weight failed to get out of her burning house in Brooklyn — and died as flames engulfed it.

The blaze erupted in the three-story home in Prospect-Lefferts Gardens at around 6 p.m. Monday and the woman died inside, according to fire officials.

“The firefighters showed up in like two minutes. But they couldn’t save my neighbor’s mom,” said one witness. “She’s a heavyset woman and I don’t think it was easy for her to move around.”