By JULHAS ALAMSAVAR, Bangladesh (AP) â¿¿ Two owners of garment factories in a Bangladesh building that collapsed into a pile of mangled metal and concrete have been arrested as public fury mounts over the accident that left at least 324 dead. Junior Home Minister Shamsul Haque Tuku said Saturday that police had arrested Bazlus Samad, managing director of New Wave Apparels Ltd., and Mahmudur Rahman Tapash, the company chairman. He told reporters that police had also detained the wife of Mohammed Sohel Rana, the owner of the collapsed building, for questioning. Authorities are still searching for Rana, who hasn't been seen publicly since the building collapsed. Police in Bangladesh often detain relatives of missing suspects as a way to pressure them to surrender. Authorities said the death toll had climbed to 324, but that rescuers had pulled seven more survivors from the rubble early Saturday after they found more than 40 survivors inside the collapsed building late Friday. The arrests came hours after Prime Minister Sheikh Hasina ordered police to arrest Sohel Rana and the owners of the garment factories based operating in the building. Hasina made the order as protests spread over the latest accident to hit Bangladesh's massive, but poorly regulated, garment industry. Wailing, angry relatives fought with police who held them back from the wrecked, eight-story Rana Plaza building, as search-and-rescue operations went on. Three of the floors had been illegally added. Fire service inspector Shafiqul Islam, who searched the building, said more than 40 survivors were found late Friday. Through holes in the structure, he gave them water and juice packs to combat dehydration in the stifling heat and humidity. "They are alive, they are trapped, but most of them are safe. We need to cut through debris and walls to bring them out," Islam said.