Lee Byung-hun poses with his ex-girlfriend.

Prosecutors have questioned the former girlfriend of actor Lee Byung-hun about her allegation that Lee was involved in illegal gambling.

The Seoul Central District Prosecutors' Office asked the 22-year-old Korean-Canadian woman identified as Kwon whether she can present concrete evidence, and it plans to summon Lee in the near future.

Kwon on Dec. 8 filed a lawsuit against Lee (39) alleging a broken promise of marriage and demanding W100 million in compensation. Two days later, she brought a complaint against Lee for taking part in illegal Baccarat games. Lee is countersuing for defamation.