The president of the firm that owns the ferry that sank in April has been detained by South Korean prosecutors and is now facing cargo overloading allegations.

Authorities see cargo overloading as one of the probable causes of the April 16 accident that had left over 300 people either dead or missing. Four Chonghaejin Marin Co Ltd workers who handled the cargo on the Sewol ferry have already been arrested, according to ABC News.

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Before a possible formal arrest, Chonghaejin president Kim Han-sik has been detained on Thursday. Senior prosecutor Yang Jun-jin said Kim knew that the ferry had already gone past its cargo limit but did not intervene, the report detailed.

All of the ferry's 15 surviving crew members have been arrested and are now facing charges of negligence and failure to protect their passengers, the report stated.

Three weeks have gone by since the Sewol had sunk, but only 269 bodies have been recovered with 35 still missing. Government task force spokesman Ko Myung-seok said divers have not yet recovered more bodies since Wednesday afternoon because of the strong winds and high waves, the report detailed.

One civilian diver died on Tuesday after falling unconscious in the middle of the search. This is the first death among the divers involved in the search since the accident, the report added.

Families of the missing passengers have been camping out at a port nearby while waiting for updates on their loved ones. Many citizens of South Korea have criticized the government's rescue efforts and regulatory failures in terms of cargo monitoring, the report said.

On Wednesday, the South Korean government announced that it had made a mistake in counting the survivors. Coast guard leader Kim Suk-kyoon said there are 172 survivors, not 174, as the government had announced, ABC News explained.

According to Kim, one of the survivors was mistakenly listed twice due to an inaccurate report by a ferry passenger. He also said there are two Chinese nationals that are still missing, the report relayed.

Over 80% of those who died in the sinking were high school students from a Seoul who were attending a tour to Jeju Island, the report stated.

Authorities have evidence of the ship's cargo overloading. However, the entity that ensures the safety of passengers had inaccurate information regarding the actual safe cargo limit of the ship, wrote ABC News.