The fisheries minister and coastguard chief explained the search operation in detail to angry relatives Frustrated relatives of scores of passengers still missing from the South Korean ferry disaster have angrily confronted the fisheries minister and the coastguard chief.The pair were surrounded by angry family members in a tent on Jindo island where the rescue operation is being co-ordinated.
They spent all of Thursday night trying to explain the search effort.
At least 183 passengers have been confirmed dead, with 121 still missing.
There were 476 people on board, with many trapped inside as the ferry listed and sank within two hours of distress signals being sent. A total of 174 passengers were rescued.
Many of those who died or are presumed dead were students and teachers from Danwon high school, south of Seoul.
On a visit to Seoul on Friday, US President Barack Obama expressed his condolences for South Korea's "incredible loss" and offered America's solidarity.
"I can only imagine what the parents are going through at the moment - the incredible heartache," he said.
President Barack Obama expressed his sorrow during a meeting with President Park Geun-Hye
Divers continued their arduous task of scouring the sunken ferry for more bodies
Some relatives of those killed or missing have released paper boats in their honour in Jindo Prosecutors are said to be investigating whether modifications made to the ferry made it more unstable.
Factors under consideration include a turn made around the time the ship began to list, as well as wind, ocean currents and the freight it was carrying.
Reports have emerged indicating that the ship's sleeping cabins were refitted some time between 2012 and 2013, which experts say may have inadvertently affected the balance of the boat.
Investigators on Friday said that life rafts and escape chutes on a sister ship to a sunken ferry were not working properly.
With bad weather and stronger currents expected at the weekend the government says that it is "mobilising all available resources" towards the rescue effort.
It says that about 88 expert divers are searching for survivors on cabins on the third and fourth decks,
The authorities say that hundreds of civilian divers who are also at the scene are slowing down the rescue operation and will no longer be allowed participate.
Local media reports say that divers who have succeeded in reaching the wreck are exhausted, with some needing treatment for decompression sickness after swimming in cold, dark waters for long hours.
As the chances of finding survivors recedes, relatives have become increasingly angry with what they see as the slow pace of the rescue operation.
In addition to their overnight confrontation of the fisheries minister and the coastguard chief, another top official was attacked on Thursday by relatives who accused him of lying about the rescue effort.
Deputy coastguard head Choi Sang-Hwan was surrounded by about 20 relatives who stormed his temporary office at Jindo port, correspondents say.
Many family members and friends of those on board the ferry are still awaiting news of the fate of their loved ones
Teams of divers have been searching the sunken ferry for the bodies of those who died
Bodies are being brought to shore - where many relatives wait for news of their loved ones
The crabster robot is the size and weight of a Smart carIt is designed to work up to 200m below the surface in high tidal currents where divers are unable to operate A 500m-long cable allows four operators to control the robot from a surface vessel. Data is also fed to the surface via the cableIt is equipped with 10 optical cameras and a long-range scanning sonar
Teams have been bringing bodies recovered from the sunken ferry ashore to Jindo island
Bereaved relatives are desperate to have the bodies of their loved ones returned
It is not yet clear when the vessel could be raised, but specialist equipment has been brought in
Over the weekend relatives confronted police as they took part in a protest march
In a 2010 promotional video, Captain Lee Joon-seok says he believes ferries are the safest form of transport "as long as passengers follow the instructions of our crew"
Tempers sometimes flared up between the relatives of those on board and police
the South Korea Prime Minister Chung Hong the nationals won addressed directly to the Sunday
rescue workers unloaded some of the facilities at a port Jindo on Sunday
Flares light up the early morning sky as teams continue to search the capsized ferry
Relatives wait anxiously for news of their loved ones at a port in Jindo
Parents at Danwon high school hold a candle light vigil in Ansan. More than 300 students from the school were on board the ship
Military and civilian ships and helicopters have been searching for survivors
Rescued passengers were taken to the nearby island of Jindo