KOREA - The police have launched a full-scale investigation into allegations that actress Jang Ja-yeon was forced into having sex by her agency.

The Bundang Police Station organized an investigation team on Saturday to analyze the background to the death of the actress, who committed suicide on March 7.

The team seized and searched the agency office, Jang's house, her manager's house and other related places for evidence, according to police officials.

When Jang, a 27-year-old actress who had a supporting role in the mega-hit KBS drama "Boys Over Flowers," was found dead in her home by her sister, the police at first regarded the case as a suicide driven by depression.

That view changed when Jang's manager Yoo claimed to possess a 6-page hand-written statement by the late actress that revealed the story behind her death.

"There is a public enemy who is liable for her death," he said. "All who work in the entertainment business should know who that is."

The rumors resulting from this ambiguous claim developed into a major scandal when KBS disclosed on Saturday three pages of a document allegedly written by Jang.

In the document, according to KBS, the late actress testified to being forced by her agency to have sex with notable social figures and listed their names.

The document also contained her social registration number and thumbprint, raising speculation that she was preparing for legal proceedings.

Jang's agency, accusing Yoo of fabricating the documents, denied all charges and said that they would file a suit against him for libel.

"We have been handed the original documents and are investigating whether the document was written by Jang herself and whether the contents are indeed true," said a police official.

The police refused to reveal the names of those listed in the document as Jang's sexual abusers.