Several flights to and from the Hunan provincial capital received bomb threats on Thursday, according to Chinese Internet portal Sina.com.cn.

Micro-bloggers released the information about the threats to their flights arriving or departing Changsha Huanghua International Airport.

Capital Airlines, one of the airlines affected, confirmed on its micro blog at 2 pm that flight JD5662 from Changsha to Hangzhou received a bomb threat over the phone at 12:45pm, 30 minutes after its departure.

The plane landed at an airport in Jiangxi province and passengers and crew members evacuated the plane safely.

Public security departments are investigating the case, the micro blog said.

However, an employee of Changsha airport said the airport did not receive any information about the bomb threat and flight operations were normal.