"We have stepped up vigil and search operations to check manufacturing, stock and sale of adulterated, spurious and unhygienic food products in the area," Mohali District Health Officer (DHO) H S Oberoi said.
Acting on a tip-off, a Health Department team led by Oberoi raided a manufacturing unit near here but no such material was recovered which could immediately establish that adulterated cheese was being produced there.
Preliminary investigation has revealed the manufacturer had procured the milk from Haryana, the DHO said.
Warning manufacturers and dealers against indulging in unethical trade practices, Oberoi said, "Anyone found playing with the public health would be dealt with sternly.