The officials of the Food and Drug Administration (FDA) of Konkan region cracked down on manufacturers of dairy products in Maharashtra's Thane city and seized substandard food items worth more than Rs 4 lakh, an official said on Saturday.

A government committee under the chairmanship of Thane additional collector Manisha-Jaibhaye-Dhule has started inspections at establishments manufacturing dairy products, Joint Commissioner of FDA (Food) Suresh S Deshmukh said.