The accused, identified as Atish Ranjan alias Trilochan Kumar alias Sumit was arrested by the Crime Branch of Delhi Police after it received a tip off that he will be coming to Mehrauli Badarpur Road.
It was found that Ranjan is the nephew of Suman Verma, an associate professor in the Mathematics department of the Delhi University who had registered a complaint at the Maurice Nagar Police Station last year saying that he had been getting extortion calls.
The extortionist posed himself as a gangster to threaten the Assistant Professor, said Chand.
The mobile phone and the SIM card used for threatening the Assistant Professor has been recovered, police said.
Ranjan hailed from Patna where he had worked in BPO, MNS Company. He came to Delhi in 2010 where he joined a bank as sales executive for six months. In 2012, he changed his job profile and started providing waiters for celebratory functions. In the year 2013, he was in deep financial crises and therefore he planned to extort money.