Wang Lijun is currently "under investigation by relative government authorities and progress has been made," a government spokesman with Chongqing Municipality told reporters Monday on the sidelines of the nation's ongoing annual political sessions.

The spokesman also responded to a question that whether Chongqing Mayor Huang Qifan had headed Chongqing with 70 police cars to bring Wang back, as wildly spread online: "I can tell you in a responsible manner that only three Chongqing leaders and the municipality's secretary-general, including Huang Qifen, Chen Cungen and Xu Jingye, were sent by the municipal Party committee and municipal government" to Chnegdu.

The talking of the "70 police cars" is "completely nonsense and slander," the spokesman said, adding that a picture circulated online with armored cars had been processed using software.

When asked about Wang's visit of U.S. consulate in Chengdu, U.S.' China ambassador Gary Locke said Wang "came in for a regularly scheduled meeting," and "later left of his own accord."

Earlier on 8 Feb, the government said on its micro-blog site that Wang "has suffered overwork and immense mental stress for a long time" and "is currently taking vacation-style therapy."

On the same day, a U.S. State Department spokeswoman confirmed that Wang had met with the consular officials on Monday but that he had left "of his own volition."

Responding to reporters, a foreign ministry spokesperson said the next day that Wang "entered the consulate in Chengdu on February 6 and stayed there for a day before leaving."

On March 2, Zhao Qizheng, spokesman for China's top advisory body which is convening its annual session in Beijing, told reporters that Wang LIjun's case is just an "islated incident," and that there should not be "too much imagination" over the incident.

Reports about Wang's case have flooded, but most of them are based on isolated and "incomplete" materials, and then "replenished by imagination", according to Zhao.