LONDON - A leading British university criticised the BBC on Sunday for arranging an academic trip to the Democratic People's Republic of Korea(DPRK) to make an undercover documentary, saying it had put students who were unaware of the plans in danger.

The London School of Economics (LSE) said three BBC journalists - including the respected reporter John Sweeney - joined a student society trip at the end of March, posing as tourists to make a film about the secretive state.

The university said the students had been told "a journalist" would accompany them, but it had not been made clear the BBC's aim was to use the visit to record an undercover film for "Panorama", a current affairs program.

"This was not an official LSE trip," Craig Calhoun, the Director of the LSE, wrote on Twitter. "Non-students & BBC organised it, used the society to recruit some students, & passed it off."

Tensions on the Korean peninsula have escalated in recent weeks, with DPRK threatening nuclear war against the United States and the Republic of Korea.

Alex Peters-Day, general secretary of the LSE's student union, told Sky News the students were only told of the BBC's intentions to make an undercover film at a very late stage, with one saying she was only informed when they were on the plane to DPRK.

She said the BBC had used the students as "human shields".

The university said Sweeney, who graduated from the LSE in 1980, had posed as a history PhD student at the university to gain entry to the country even though he currently had no connections with the institution.

"BBC staff have admitted that the group was deliberately misled to the involvement of the BBC in the visit," the LSE said in an email to staff and students released to the media.

"It is the LSE's view that the students were not given enough information to enable informed consent, yet were given enough to put them in serious danger if the subterfuge had been uncovered prior to their departure from DPRK."

"STUDENTS WARNED"

It said the LSE's chairman had asked the BBC to pull the documentary, which is due to be shown on Monday, but the broadcaster's director-general had refused.

Sweeney admitted he had lied to the DPRK government agency that helped organise the visit, but defended the BBC's actions.

"What the LSE has been doing is putting out stuff which is factually inaccurate in our view," Sweeney told BBC TV. "They're putting words into the students' mouths. The majority of students support this program."

Ceri Thomas, the Head of BBC News Programs, said the students had been told twice about the possible dangers of having a journalist on the trip, but were not informed about the broadcaster's plans to make an undercover film because it would have put them in a worse position had the BBC team been found out.

"They had the information we think to make informed consent," he told BBC TV. He said he could not categorically rule out students' lives were put at risk but stated there was an "overwhelming" public interest in making the documentary.

"It's vital that we get in... because the public in this country on mainstream television on tomorrow night has a very, very strong interest ... particularly at this moment in seeing what's going on inside DPRK," he said.

Panorama's website said Sweeney had spent eight days undercover "inside the most rigidly-controlled nation on Earth".

The LSE said aspects of DPRK were legitimate objects of study in several academic disciplines but said the BBC may have seriously damaged the university's reputation, and jeopardised future visits to DPRK and other countries.

"BBC story put LSE students at danger but seems to have found no new information and only shown what DPRK wants tourists to see," Calhoun wrote.