Four years ago, South Korea witnessed its worst ever maritime disaster, which claimed the lives of 304 people, mostly high school students on a field trip to Jeju Island.
The Sewol-ho ferry, carrying 475 passengers capsized in waters off the country's southwestern island of Jindo on April 16th, 2014.
Though four years have passed, the exact cause of the tragic incident still remains unknown, as the nation's Supreme Court ruled that the 2014 probe, which claimed the sinking was caused by a combination of cargo overloading, an illegal redesign of the ship and the crew's poor helmsmanship, lacked evidence.
Since then, efforts have been made by the government and civic organizations to uncover the truth behind the incident.
Last year, the rusty body of the 6,825 ton ferry was finally raised out of the sea, and it now lies on its side at the southwestern Mokpo New Port.
As of Monday, out of the total of 304 victims, the remains of five victims still haven't been found.
The Sewol investigation committee vowed to continue search operations and reinvestigate the accident, when the ferry is erected upright next month.
Kim Mok-yeon, Arirang News.