Samsung Scion Jay Y Lee

Prosecutors are appealing against a February ruling that found Lee not guilty of all charges including accounting fraud and stock manipulation

Lee is having to refocus on his legal troubles, with the Seoul Central District Court scheduled to hold its first hearing of a case in which Lee is suspected of receiving propofol

Lee apologised for causing public concern upon being paroled with a year left on his sentence for crimes related to the explosive corruption scandal that toppled South Korea's previous president

Lee, 53, appeared outside the Seoul Detention Center, wearing a dark grey suit and looking thinner than when he was last detained in January

Prosecutors say they seek Lee's arrest on suspicions of stock price manipulation and audit rule violations, among other offences

Many South Koreans in the business community welcomed Lee's release

The appellate court hearing the appeal is likely to try to rule on the case by next February, legal experts said