Fire crews were called to Abington Street this afternoon after rubbish stuffed behind an electricty box went up in flames.
Two fire engines were called to Northampton town centre, close to the Kwik Tan Tanning Centre shortly before 12.45pm.
Firefighters used water to put out the small blaze.
They then used thermal imaging equipment to check the interior of the electricity box, which was undamaged.
The cause of the fire is currently unknown.