BEIJING, July 11 (Xinhuanet) -- Hong Kong singer, film actor and producer Andy Lau has always refused to talk about his marriage. But now a marriage certificate registered in the names of Andy Lau Tak-Wah and Carol Choo Lay Keng indicates he was married on June 23, 2008.

A report in the "Chengdu Evening Post" said some paparazzi found the star's marriage certificate in Las Vegas, Nevada, and published a photo of it.

Lau and Choo had been secretly involved with each other since the late 1980s, but Lau never admitted it until last year when her father died.