Bangladeshi authorities have ordered an investigation into the deaths of thousands farm chickens in the northern Gazipur district, because of fears of the spread of bird flu.
But, officials say there have been no confirmed cases of the deadly disease in the country so far. They say they are going ahead with the investigation because, as they put it, it is better to be safe than sorry.
In the meantime, the panic has badly affected the poultry business in Bangladesh.
Fears of the spread of bird flu in Bangladesh rose earlier this month, following the deaths of 12 people, who suffered from fevers, vomiting, headaches and diarrhea. Dozens of others were also infected.
Doctors who treated them say early tests indicated they suffered from viral encephalitis. But they say they have not yet identified the exact strain of the disease.
Last week, bangladesh banned the import of chickens from nine nations, most of which have confirmed cases of bird flu.