Parvez, Pankaj Singh and Amit Tondon were arrested from Mahanagar area by an STF team which was tracking them down on a complaint by UPPCL, a senior STF official said here.
The three were involved in hacking UPPCL billing system by creating fake user id through which they reduced bills of consumers by taking money from them.
They had reduced bills of several consumers in Gorakhpur and Varanasi and FIRs were also registered in those cases before the UPPCL approached the STF, he said.