Police are launching an investigation after a longtime stalker broke into T-ara Soyeon's home.

According to reports, Soyeon recently filed a police report after a stalker broke into her home. The stalker, who is reported to have been waiting for her when she returned home, was later apprehended and questioned at the Gangnam Police Station in Seoul.

Insiders say Soyeon has been dealing with this particular stalker for years, and she previously revealed she was suffering from a stalker's harassment in 2011. The stalker in question is said to have previously broken into her home to leave women's underwear and has also made death threats against the star.

Soyeon's label plans to take legal action against the stalker to protect her safety.

In related news, T-ara's Jiyeon also recently received death threats.