The owner of an eight-storey factory complex in Bangladesh, which collapsed killing at least 377 people, has been arrested along the country's border with India.
Mohammed Sohel Rana was brought back to the capital Dhaka by helicopter and now faces charges over the disaster.
An announcement was also made by loudspeaker at the site of the disaster, where people cheered and clapped.
Mr Rana's wife had already been detained - but he had not been seen since the building toppled to the ground on Wednesday.
He reportedly had the approval to construct five floors but added three more illegally.
Rescue teams have been working at all hours and have now called in heavy-lifting equipment to get to the workers still trapped underneath the rubble of the structure.
Hundreds of relatives of missing workers have been gathering at the site in the hope of finding their loved ones.
Food is passed down to trapped workers through a holeA further nine survivors were found on Sunday - in addition to the 29 rescued alive on Saturday.
However, hopes of finding more people trapped under the mound of broken concrete and metal are now starting to fade with hundreds of people still missing.
"The chances of finding people alive are dimming, so we have to step up our rescue operation to save any valuable life we can," said Major General Chowdhury Hassan Sohrawardi, co-ordinator of the operation.
Until now, have been using hand tools, fearing the use of cranes would dislodge masonry and put trapped survivors at risk.
And while the number of survivors has been growing, so has the death toll.
It is the deadliest tragedy to hit Bangladesh's clothing industry, which is worth $20bn (£13bn) a year.
Rescuers at the scene of the disasterOn Saturday, police arrested three factory bosses as well as two engineers involved in approving the design of the Rana Plaza building in the Dhaka suburb of Savar.
It housed five clothing factories, employing a total of 3,122 staff.
It is not known how many workers were inside the structure when it collapsed. Some 2,500 survivors have been accounted for.
The three factory bosses arrested included Bazlus Samad, managing director of New Wave Apparels, Mahmudur Rahman Tapash, the company chairman, and Aminul Islam, chairman of Phantom Apparels.
Wednesday's tragedy has sparked protests about the poor working conditions of workers who toil for as little as £25 a month to produce clothing for top international brands.
High street giant Primark - and Spain's Mango - have confirmed their products were made in the block.
Protesters held a demonstration outside Primark's flagship store in central London on Saturday to demand compensation for the workers who were killed.