Investigators are working to determine what caused a machine at a recycling company in North Haven to catch on fire on Tuesday morning.
Firefighters said someone passing by called in a fire at Sims Metal Management on Universal Drive around 4:40 a.m.
Authorities said a machine called a separator caught on fire. Some scrap metal caught on fire, too.
Officials previously said in a tweet that the fire involved debris piles, machinery and a building.
The extent of the damage is unclear at this time.