Firefighters were called to a bonfire on a patch of land in Accrington last night.
Glenn Fogarty, watch manager at Hyndburn Fire Station, said they received a call at 7pm on Monday.
"Somebody was burning things off Downham Drive in Accrington," he said. "We managed to get there quickly and put it out. It's not right to start bonfires at any given time. We warned the people who started the bonfire not to do it again."
At 10.25pm last night the same fire crew was called to the bottom of Argyle Street after a skip was reported as alight.
A neighbour had used a garden hose in an attempt to put out the fire but firefighters ensured it was soon extinguished after arriving at the scene.
Watch manager Fogarty said: "It was a deliberate fire and dangerous to people living on that street. Thankfully it wasn't allowed to get out of control."