A fire broke out at an ancillary unit inside Tata Nano's Vendor Park in Sanand taluka of the district today, officials said. The vendor park, having several ancillary units supplying parts for the car, is situated near the Tata Nano plant around 25 km from the city. It took almost two hours to contain the fire, which broke out this afternoon inside the manufacturing unit of 'Supreme-Treves', a vendor of Tata, officials said. "The fire broke out in the afternoon. It took almost two hours to contain it using 10 fire tenders. Eight of those were sent by the city fire brigade while two belonged to the company. No casualty has been reported," said Additional Chief Fire Officer of the city Rajesh Bhatt. Investigation is underway to find out the cause of the fire, he added.