A group of South Korean filmmakers, actors and industry officials, including "Parasite" director Bong Joon-ho, on Friday called for a probe into the handling by police and media of drug abuse allegations involving late actor Lee Sun-kyun.

Lee, who shot to global fame with his performance as the wealthy patriarch in the Oscar-winning film "Parasite", was found dead last month in an apparent suicide.

Bong and more than a dozen other film, music and entertainment industry figures held a news conference in Seoul, urging authorities to look into whether police handled Lee's case without violating security and privacy rules.

Since his case was first reported by a local newspaper citing a police official, Lee suffered attacks on his reputation due to constant leaks about the investigation even after multiple drug tests turned negative, they said.

They also denounced "sensational" coverage by some news outlets and YouTubers focusing on Lee's private life using unverified information, calling it "yellow journalism."

"We call for a fact-finding probe into whether there were any security problems regarding the police investigation," Bong said, reading a statement signed by more than 2,000 artists and 29 industry associations.

"We're asking the press and media," singer-songwriter Yoon Jong-shin said, "Wasn't your coverage sensational highlighting someone's private life just because he was a pop culture artist?"

Calls to Incheon police which investigated Lee went unanswered. Its chief has denied violating security rules while expressing regret over his death.

Lee's death rekindled criticism from the entertainment industry and the public over the often harsh and public nature of any criminal investigations involving celebrities which fuelled media coverage and pressure on them.

Yoon singled out a report by public broadcaster KBS using a recording of Lee's phone call with a bar hostess, questioning if it was meant to serve people's right to know and demanding it be deleted.

KBS did not immediately respond to a request for comment.

Lee made three highly public appearances before police between October and December, the last time for 19 hours overnight.

He had denied knowingly taking illegal drugs and said he was tricked by the bar hostess who later blackmailed him, local news media reported before his death.