Bangladesh police on Sunday arrested the owner of a garment factory block that collapsed last week killing more than 370 people as he attempted to flee to India, officials said.

"He has been arrested and will be tried," the country's deputy home minister Shamsul Haque Tuku told reporters, referring to Sohel Rana, allegedly a ruling party official, whose building violated the country's construction code.

The head of the country's Rapid Action Battalion police force, Mukhlesur Rahman, told AFP: "Rana has been arrested from the Benapole border. He's being flown back to Dhaka in a helicopter."

Benapole is Bangladesh's main border post with India.

Three owners of factories inside the destroyed eight-storey Rana Plaza building were arrested on Saturday and face charges of "causing death due to negligence".