Mr. Yevoli has long opposed development on the site, citing possible threats to ground water.

He resigned in a controversial speech at the 1992 graduation, citing government interference and threats to academic freedom.

As a result, the speech was cancelled, citing "credible threats of violence".

It cited threats and attacks against news media.

He briefly left Colombia in May 2000, citing violence and threats against his family.

However, citing threats to habitation, the government has refused clearance to the project.

Among the intelligence reports received in recent days was one citing threats to a Senate office building, one senior government official said.

But the mosque's leaders canceled the visit, citing threats by protesters to disrupt the service.

The Government cited threats to national security, as a war with Pakistan had recently been concluded.

The announcement also cited Iranian threats against navigation in the gulf.