According a senior official, the former director of NITTTR, Vijay Agrawal, had allegedly got the construction, maintenance and repair works of the institute building carried out without inviting tenders and made payments in violation of rules.
"During the searches, CBI officials recovered some incriminating documents regarding construction, maintenance and repair works carried out during Agrawal's tenure as director between 2009 and 2014 at NITTTR here," the officer said.
"The action was taken based on a complaint forwarded to us by Chief Vigilance Officer," the officer said.
He said that searches at some places are still on.