Chung's wife found him dead in the living room of their home in Hwaseong, some 70 kms south of Seoul, at 8.12 a.m. on Friday, according to local police, reports Yonhap news agency.
Police said Chung was diagnosed with arrhythmia after a check-up three years ago, and his family said Chung had complained of occasional chest pains, especially when he was under stress.
Police said the exact cause of three-time World Championships medallist Chung's death has not yet been determined and they will ask the National Forensic Service to conduct an autopsy.
The local and international badminton communities reacted with shock after Chung's sudden death.
"Despite his short stature, he tried so hard to be among the world's best," Kim said. "It's so sad to see him go."
Lee Chong Wei, former world No.1 in the men's singles, told the Malaysian newspaper Star: "This is sad news. I offer my condolences to his wife and two children and I pray that the family will stay strong."
"#RIPJungJaesung #Great Legend! Prayers and condolences to his family and friends! Sad day for badminton," 2012 Olympic bronze medallist Saina wrote on Twitter, posting a picture of Chung, who also won three medals being part of South Korean mixed team in Sudirman Cup.
"#RIPJungJaesung #Legend Loved that deadly drop shot! Prayers and condolences to everyone who loved him! @bwfmedia Sad day for badminton."
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)