Bangladesh has urged the European Union not to take tough measures against its economically crucial textile industry.

It was in response to the collapse of a garment factory that killed nearly 550 people.

Bodies are still being pulled from the ruins following the country's worst ever industrial accident.

The EU gives preferential access to Bangladeshi garments.

It had threatened punitive measures in order to press Dhaka to improve worker safety standards after the collapse of the illegally built factory on 24 April.

The disaster has put the spotlight on Western retailers who use the impoverished South Asian nation as a source of cheap goods.

About four million people work in Bangladesh's garment industry, making it the world's second-largest apparel exporter after China.

Some earn as little as $38 a month (€28), conditions Pope Francis has compared to "slave labour".

Duty-free access offered by Western countries and low wages have helped turn Bangladesh's garment exports into a $19 billion-a-year industry (€14bn), with 60% of clothes going to Europe.

"If the EU or any other buyers impose any harsh trade conditions on Bangladesh it will hurt the country's economy ... millions of workers will lose their jobs," Mahbub Ahmed, the top civil servant in Bangladesh's Commerce Ministry, told Reuters.

The government has not received any formal notification of punitive action from the EU or any other country over the deaths, he said.

Authorities have arrested nine people in connection with the collapse, including an engineer who had raised safety concerns about the eight-storey complex a day before the disaster.