As many as 100 chickens were found dead at a poultry farm in Vehloli village of Shahapur tehsil in Thane district, said Thane District Magistrate and Collector Rajesh J Narvekar on Friday. Considering the bird flu threat, the samples have been sent to a lab in Pune.

He further said that around 25,000 birds falling in a kilometre radius of the affected poultry farm will be killed within the next few days. The district animal husbandry department has been ordered to take measures to control the infection.