At a news conference, the minister gave details of the discovery of 10kg (22lbs) of ammonium nitrate - which can be used in improvised explosives - a computer with files containing information on bomb-making and a flash memory with instructions on how to build rockets.
The university has asked that witnesses share any information about the bomb threats.
Police have appealed for anyone with information concerning the petrol bomb attack to contact them.
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"This information may be a bomb threat but we are not sure yet, it could be a fake threat, " Tajwar told CNN.
Dozens of American communists penetrated the administration, some at the highest levels, and stole scientific and political secrets, including information on the atomic bomb.
These arrests aside, you had an event -- episode a couple weeks ago where U.S. intelligence shared information with the Pakistanis regarding two bomb-making compounds, and then the militants apparently fled.
Any unexploded devices could provide a treasure trove of information such as fingerprints and indications of the bomb maker's design, said the former federal law enforcement official.
The unexploded devices that were recovered could provide a treasure trove of information such as fingerprints and indications of the bomb maker's design, a federal law enforcement official who now works in the intelligence community said.
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The unexploded devices that were recovered could provide a treasure trove of information such as fingerprints and indications of the bomb maker's design, and from the bombs that did explode, investigators would be looking for fragments and anything indicating the "signature" of the bomb makers, the official told CNN.
Only a small minority of teens who use the Internet have ever seen Web sites that have information from hate groups, show how to build a bomb or buy a gun.
Lekesiz said the security forces now had detailed information about how the suspects allegedly acquired the explosives and staged the bomb attacks, the news agency reported.
The Soviets' knowledge from 1941 that the western allies were pursuing the bomb, and the receipt of detailed scientific and technological information from top scientists such as Klaus Fuchs, must have speeded up the development of their own nuclear weapons.
Three months before the Christmas Day attempted bombing John Brennan, Obama's top counterterrorism adviser, had been personally briefed by Prince Nayef about the assassination attempt, so information about the possible use of a hard-to-detect PETN bomb was known within the U.S. national security establishment.
The driver of one of the latest bomb-carrying taxis survived, and so the police have some information about his passengers, the presumed culprits.
Nanan Soekarna, deputy chief of the National Police, said police acted on information received from interrogating the two men arrested last week on suspicions of plotting to bomb the embassy.
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