Preliminary investigation shows that factors including failed romance, unrestrained gambling could be the reasons behind suicide of a Foxconn Technology Group employee Friday, said police authorities in south China's Shenzhen City.

Nan Gang, 21, climbed to the top of a factory building in Foxconn's industrial complex in Longhua Township and fell to his death at 4:37 a.m., said Huang Jianwei, a spokesman of the Bao'an Police Station, of the Shenzhen Public Security Bureau.

Nan's suspected suicide was the 10th of the kind ever happening at the Foxconn's Shenzhen plant since the beginning of the year.

Police said they learned from investigations that Nan Gang's parents were divorced and Nan was the only child of the family. Nan's ex-girlfriend got married this year in February, and his new girlfriend also deserted him early this month.

Nan was said to be ill tempered and fond of gambling, and was thus in deep debts before his death.

According to the police, not long ago, Nan had fights with his co-workers, so he employed others to beat the co-workers, but was later blackmailed by the same group of people.

Nan allegedly had said he would take revenge and even showed his intent to commit suicide before he fell off the building Friday.

Police have already captured the suspects for blackmailing Nan pending further investigation.

Shenzhen-based Foxconn's company profile on its website says it's the world's top electronics manufacturer with more than 600,000 employees and ranked 109 among the Fortune 500 companies in 2009. It is linked to Taiwan electronics giant Hon Hai Group.